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Encyclopedia > List of numbers

This is a list of articles about numbers (not about numerals). A number is an abstract entity that represents a count or measurement. ... A numeral is a symbol or group of symbols that represents a number. ...

Contents

Rational numbers

In mathematics, a rational number (commonly called a fraction) is a ratio or quotient of two integers, usually written as the vulgar fraction a/b, where b is not zero. ...

Notable rational numbers

Natural numbers

0 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
30 31 32 33 34 35 36 37 38 39
40 41 42 43 44 45 46 47 48 49
50 51 52 53 54 55 56 57 58 59
60 61 62 63 64 65 66 67 68 69
70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89
90 91 92 93 94 95 96 97 98 99
100 101 102 103 104 105 106 107 108 109
110 111 112 113 114 115 116 117 118 119
120 121 122 123 124 125 126 127 128 129
130 131 132 133 134 135 136 137 138 139
140 141 142 143 144 145 146 147 148 149
150 151 152 153 154 155 156 157 158 159
160 161 162 163 164 165 166 167 168 169
170 171 172 173 174 175 176 177 178 179
180 181 182 183 184 185 186 187 188 189
190 191 192 193 194 195 196 197 198 199
200 210 220 230 240 250 260 270 280 290
300 400 500 600 700 800 900
1000 2000 3000 4000 5000 6000 7000 8000 9000
10k-100k 100k-1M 1M-10M 10M-100M 100M-1000M Larger #s

In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... 0 (zero) is both a number and a numerical digit used to represent that number in numerals. ... Look up one in Wiktionary, the free dictionary. ... “II” redirects here. ... This article discusses the number three. ... This article discusses the number Four. ... Look up five in Wiktionary, the free dictionary. ... Look up six in Wiktionary, the free dictionary. ... Seven Days of Creation - 1765 book, title page Seven (7) is the sixth successor of one (1). ... Look up eight in Wiktionary, the free dictionary. ... Look up nine in Wiktionary, the free dictionary. ... 10 (ten) is an even natural number following 9 and preceding 11. ... 11 (eleven) is the natural number following 10 and preceding 12. ... Look up twelve in Wiktionary, the free dictionary. ... 13 (thirteen) is the natural number following 12 and preceding 14. ... 14 (fourteen) is the natural number following 13 and preceding 15. ... 15 (fifteen) is the natural number following 14 and preceding 16. ... 16 (sixteen) is the natural number following 15 and preceding 17. ... 17 (seventeen) is the natural number following 16 and preceding 18. ... 18 (eighteen) is the natural number following 17 and preceding 19. ... 19 (nineteen) is the natural number following 18 and preceding 20. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 21 (twenty-one) is the natural number following 20 and preceding 22. ... 22 (twenty-two) is the natural number following 21 and preceding 23. ... This article is about the number 23. ... 24 (twenty-four) is the natural number following 23 and preceding 25. ... 25 (twenty-five) is the natural number following 24 and preceding 26. ... 26 (twenty-six) is the natural number following 25 and preceding 27. ... 27 (twenty-seven) is the natural number following 26 and preceding 28. ... 28 (twenty-eight) is the natural number following 27 and preceding 29. ... 29 (twenty-nine) is the natural number following 28 and preceding 30. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 31 (thirty-one) is the natural number following 30 and preceding 32. ... 32 (thirty-two) is the natural number following 31 and preceding 33. ... 33 is the natural number following 32 and preceding 34. ... 34 (thirty-four) is the natural number following 33 and preceding 35. ... 35 (thirty-five) is the natural number following 34 and preceding 36. ... 36 (thirty-six) is the natural number following 35 and preceding 37. ... 37 (thirty-seven) is the natural number following 36 and preceding 38. ... 38 (thirty-eight) is the natural number following 37 and preceding 39. ... 39 (thirty-nine) is the natural number following 38 and preceding 40. ... 40 (forty) is the natural number following 39 and preceding 41. ... 41 (forty-one) is the natural number following 40 and preceding 42. ... Look up forty-two in Wiktionary, the free dictionary. ... 43 (forty-three) is the natural number following 42 and preceding 44. ... 44 (forty-four) is the natural number following 43 and preceding 45. ... 45 (forty-five) is the natural number following 43 and followed by 47. ... 46 is the natural number following 45 and preceding 47. ... 47 (forty-seven) is the natural number following 46 and followed by 48. ... 48 (forty-eight) is the natural number following 47 and preceding 49. ... 49 (forty-nine) is the natural number following 48 and preceding 50. ... 50 (fifty) is the number following 49 and preceding 51. ... 51 (fifty-one) is the natural number 51 following 50 and preceding 52. ... 52 (fifty-two) is the natural number following 51 and preceding 53. ... 53 (fifty-three) is the natural number following 52 and preceding 54. ... 54 (fifty-four) is the natural number following 53 and preceding 55. ... 55 is the natural number following 54 and preceding 56. ... 56 (fifty-six) is the natural number following 55 and preceding 57. ... 57 (fifty-seven) is the natural number following 56 and preceding 58. ... 58 is the natural number following 57 and preceding 59. ... 59 (fifty-nine) is the natural number following 58 and preceding 60. ... 60 (sixty) is the natural number following 59 and preceding 61. ... 61 (sixty-one) is the natural number following 60 and preceding 62. ... 62 (sixty-two) is a natural number following 61 and preceding 63. ... Sixty-three is a natural number following 62 and preceding 64. ... 64 (sixty-four) is the natural number following 63 and preceding 65. ... 65 is the natural number following 64 and preceding 66. ... 66 is the natural number following 65 and preceding 67. ... 67 is the natural number following 66 and preceding 68. ... 68 (sixty-eight) is the natural number following 67 and preceding 69 // Sixty-eight is a nontotient. ... 69 (sixty-nine) is the natural number following 68 and preceding 70. ... Look up seventy in Wiktionary, the free dictionary. ... 71 is the natural number following 70 and preceding 72. ... 72 is the natural number following 71 and preceding 73. ... 73 (seventy-three) is the natural number following 72 and preceding 74. ... 74 (seventy-four) is the natural number following 73 and preceding 75. ... 75 (seventy-five) is the natural number following 74 and preceding 76. ... 76 is the natural number following 75 and preceding 77. ... 77 (seventy-seven) is the natural number following 76 and preceding 78. ... 78 (seventy-eight) is the natural number following 77 and followed by 79. ... 79 (seventy-nine) is the natural number following 78 and preceding 80. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 81 is the natural number following 80 and preceding 82. ... 82 is the natural number following 81 and preceding 83. ... 83 (eighty-three) is the natural number following 82 and preceding 84. ... 84 (eighty-four) is the natural number following 83 and preceding 85. ... 85 is the natural number following 84 and preceding 86. ... 86 (eighty-six) is the natural number following 85 and preceding 87. ... 87 (eighty-seven) is the natural number following 86 and preceding 88. ... 88 (eighty-eight) is the natural number following 87 and preceding 89. ... 89 (eighty-nine) is the natural number following 88 and preceding 90. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 91 (ninety-one) is the natural number following 90 and preceding 92. ... 92 is the natural number following 91 and preceding 93. ... 93 is the natural number following 92 and preceding 94. ... 94 (ninety-four) is the natural number following 93 and preceding 95. ... 95 is the natural number following 94 and preceding 96. ... 96 is the natural number following 95 and preceding 97. ... 97 is the natural number following 96 and preceding 98. ... 98 is the natural number following 97 and preceding 99. ... 99 (ninety-nine) is the natural number following 98 and preceding 100. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ... 101 (one hundred [and] one) is the natural number following 100 and preceding 102. ... 102 (one hundred two) is the natural number following 101 and preceding 103. ... 103 is the natural number following 102 and preceding 104. ... 104 is the natural number following 103 and preceding 105. ... 105 (one hundred [and] five) is the natural number following 104 and preceding 106. ... 106 is the natural number following 105 and preceding 107. ... 107 is the natural number following 106 and preceding 108. ... 108 is the natural number following 107 and preceding 109. ... 109 is the natural number following 108 and preceding 110. ... 110 (one hundred [and] ten) is the natural number following 109 and preceding 111. ... 111 is the natural number following 110 and preceding 112. ... 112 is the natural number following 111 and preceding 113. ... 113 is the natural number following 112 and preceding 114. ... 114 (one hundred and fourteen) is the natural number following 113 and preceding 115. ... 115 is the natural number following 114 and preceding 116. ... 116 is the natural number following 115 and preceding 117. ... 117 is the natural number following 116 and preceding 118. ... 118 is the natural number following 117 and preceding 119. ... 119 is the natural number following 118 and preceding 120. ... 120 (one hundred twenty in American English; one hundred and twenty in British English) is the natural number following 119 and preceding 121. ... 121 is the natural number following 120 and preceding 122. ... 122 is the natural number following 121 and preceding 123. ... 123 is the natural number following 122 and preceding 124. ... One hundred twenty-four (124, CXXIV) is the natural number following 123 and preceding 125. ... 125 is the natural number following 124 and preceding 126. ... 126 is the natural number following 125 and preceding 127. ... 127 is the natural number following 126 and preceding 128. ... 128 is the natural number following 127 and preceding 129. ... 129 is the natural number following 128 and preceding 130. ... 130 is the natural number following 129 and preceding 131. ... 131 is the natural number following 130 and preceding 132. ... 132 is the natural number following 131 and preceding 133. ... 133 is the natural number following 132 and preceding 134. ... 134 is the number equal to 100 + 30 + 4. ... In mathematics 135 is the natural number following 134 and preceding 136. ... 136 (one hundred thirty six) is the natural number following 135 and preceding 137. ... 137 is the natural number following 136 and preceding 138. ... 138 (one hundred [and] thirty-eight) is the natural number following 137 but before 139. ... 139 (One hundred thirty-nine) is the natural number following 138 and preceding 140. ... 140 is the natural number following 139 and preceding 141. ... 141 is the natural number following 140 and preceding 142. ... 142 (one hundred forty-two, also one hundred and forty-two) is the natural number following 141 and preceding 143. ... 143 is the natural number following 142 and preceding 144. ... 144 is the natural number following 143 and preceding 145. ... 145 is the natural number following 144 and preceding 146. ... 146 (one hundred forty-six) is the natural number following 145 and preceding 147. ... 147 is the natural number following 146 and preceding 148. ... 148 is the natural number following 147 and preceding 149. ... 149 is the natural number between 148 and 150. ... 150 is the natural number following 149 and preceding 151. ... 151 is a natural number. ... 152 (one hundred and fifty-two) is the natural number following 151 and preceding 153. ... One hundred fifty-three is the natural number following one hundred fifty-two and preceding one hundred fifty-four. ... 154 is the natural number following one hundred fifty-three and preceding one hundred fifty-six ... (Redirected from 155 (number)) 150 is the natural number following 149 and preceding 151. ... 156 is the number equal to 100 + 50 + 6. ... 157 is the number equal to 100 + 50 + 7, following 156 and preceding 158. ... 158 is a even whole number before 159 and after 157. ... Cardinal one hundred fifty-nine Ordinal 159th (one hundred fifty-ninth) Factorization Divisors 3, 53 Roman numeral CLIX Binary 10111111 Hexadecimal 9F 159 is a natural number following 158 and preceding 160. ... 160 is the natural number following one hundred fifty-nine and preceding one hundred sixty-one. ... Cardinal one hundred and sixty-one Ordinal 161st (one hundred and sixty-first) Factorization Divisors 7, 23 Roman numeral CLXI Binary 10100001 Hexadecimal A1 161 is an odd natural number between 160 and 162. ... Cardinal one hundred and sixty-two Ordinal 162nd (one hundred and sixty-second) Factorization Divisors 1, 2, 9, 81 Roman numeral CLXII Binary 10100010 Hexadecimal A2 162 is an even natural number between 161 and 163. ... 163 is the natural number following one hundred sixty-two and preceding one hundred sixty-four. ... 164 (one hundred (and) sixty-four) is the natural number following 163 and preceding 165. ... 160 is the natural number following one hundred fifty-nine and preceding one hundred sixty-one. ... 166 is the natural number following one hundred (and) sixty-five and preceding one hundred (and) sixty-seven. ... 167 is the natural number following 166 and preceding 168. ... 168 is the natural number following 167 and preceding 169. ... 169 is the natural number following one hundred sixty-eight and preceding one hundred seventy. ... 170 is the natural number following 169 and preceding 171. ... Cardinal one hundred and seventy-one Ordinal 171st (one hundred and seventy-first) Factorization Divisors 1, 3, 9, 19, 57, 171 Roman numeral CLXXI Binary 10101011 Hexadecimal AB 171 is an odd natural number between 170 and 172. ... 172 (one hundred and seventy-two) is the natural number following 171 and preceding 173. ... 173 is the natural number between 172 and 174. ... Cardinal one hundred and seventy-four Ordinal 174th (one hundred and seventy-fourth) Factorization Divisors 1, 2, 3, 6, 29, 58, 87, 174 Roman numeral CLXXIV Binary 10101110 Hexadecimal AE 174 is an even natural number between 173 and 175. ... 175 is the natural number following 174 and preceding 176. ... Cardinal one hundred and seventy-six Ordinal 176th (one hundred and seventy-sixth) Factorization Divisors 1, 2, 4, 8, 11, 16, 22, 44, 88, 176 Roman numeral CLXXVI Binary 10110000 Hexadecimal B0 176 is an even natural number between 175 and 177. ... Cardinal one hundred and seventy-seven Ordinal 176th (one hundred and seventy-seventh) Factorization Divisors 1, 3, 59, 177 Roman numeral CLXXVII Binary 10110001 Hexadecimal B1 177 is an odd natural number between 176 and 178. ... Cardinal one hundred and seventy-eight Ordinal 178th (one hundred and seventy-eighth) Factorization Divisors 1, 2, 89, 178 Roman numeral CLXXVIII Binary 10110010 Hexadecimal B2 178 is an even natural number between 177 and 179. ... 179 is the natural number between 178 and 180. ... 180 (one hundred eighty in American English, one hundred and eighty in British English) is the natural number following 179 and preceding 181. ... 181 is the natural number between 180 and 182. ... 182 is the natural number between 181 and 183. ... Cardinal One hundred [and] eighty-three Ordinal 183rd Factorization Roman numeral CLXXXIII Binary 10110111 Hexadecimal B7 183 is the natural number following 182 and preceding 184. ... Cardinal One hundred [and] eighty-four Ordinal 184th Factorization Roman numeral CLXXXIV Binary 10111000 Hexadecimal B8 184 is the natural number following 183 and preceding 185. ... 185 (Roman: CLXXXV) is the number equal to 37 times 5. ... 186 is the natural number following 185 and preceding 187. ... Cardinal One hundred [and] eighty-seven Ordinal 187th Factorization Roman numeral CLXXXVII Binary 10111011 Hexadecimal BB 187 is the natural number following 186 and preceding 188. ... Cardinal One hundred [and] eighty-eight Ordinal 188th Factorization Roman numeral CLXXXVIII Binary 10111100 Hexadecimal BC 188 is the natural number following 187 and preceding 189. ... Cardinal One hundred [and] eighty-nine Ordinal 189th Factorization Roman numeral CLXXXIX Binary 10111101 Hexadecimal BD 189 is the natural number following 188 and preceding 190. ... 190 is the natural number following one hundred eighty-nine and preceding one hundred ninety-one. ... 191 is the natural number between 190 and 192. ... 190 is the natural number following one hundred eighty-nine and preceding one hundred ninety-one. ... 193 is the natural number between 192 and 194. ... 194 is the natural number following 193 and followed by 195. ... 195 is the natural number following one hundred ninety-four and preceding one hundred ninety-six. ... 196 is a natural number that is equal to 100+90+6. ... 197 is the natural number between 196 and 198. ... 198 is the natural number between 197 and 199. ... 199 is the natural number between 198 and 200. ... 200 is the natural number following 199 and preceding 201. ... 210 is the natural number following 209 and preceding 211. ... 220 (two hundred [and] twenty) is the natural number following 219 and preceding 221. ... 230 (two hundred [and] thirty) is the natural number following 229 and preceding 231. ... This page is a candidate for speedy deletion, because: it is patent nonsense. ... 250 is the natural number following 249 and preceding 251. ... 260 is the magic constant of nxn magic square and n-Queens Problem for n = 8, the size of an actual chess board. ... 270 is the natural number following 269 and preceding 271. ... 280 is the natural number after 279 and before 281. ... 290 is the natural number after 289 and before 291. ... This article is about the number 300. ... Four hundred is the natural number following three hundred ninety-nine and preceding four hundred one. ... Five hundred is the natural number following four hundred ninety-nine and preceding five hundred one. ... Six hundred is the natural number following five and hundred ninety-nine and preceding six hundred and one. ... 700 (seven hundred) is the natural number following 699(six hundred ninety-nine) and preceding 701(seven hundred one). Cardinal Seven hundred Ordinal 700th Factorization Roman numeral DCC Binary 1010111100 Duodecimal 4A4 Hexadecimal 2BC Vigesimal 1F0 It is the sum of four consecutive primes (167 + 173 + 179 + 181). ... 800 (eight hundred) is the natural number following 799 and preceding 801. ... Nine hundred is the natural number following eight hundred ninety-nine and preceding nine hundred one. ... Cardinal 1000 one thousand Ordinal 1000th Numeral system Factorization Prime Divisor(s) Roman numeral Unicode symbol(s) , , Greek Prefix chilia Latin Prefix milli Binary 1111101000 Octal 1750 Duodecimal 6B4 Hexadecimal 3E8 1000 (one thousand) is the natural number following 999 and preceding 1001. ... 2000 (two thousand) is the natural number following 1999 and preceding 2001. ... Three thousand (3000) is the natural number following 2999 and preceding 3001. ... Four thousand (4000) is the natural number following 3999 and preceding 4001. ... Five thousand (5000) is the natural number following 4999 and preceding 5001. ... Six thousand (6000) is the natural number following 5999 and preceding 6001. ... 7000 is the natural number following 6999 and preceding 7001. ... 8000 (eight thousand) is the natural number following 7999 and preceding 8001. ... 9000 (nine thousand) is the natural number following 8999 and preceding 9001 and is far lower than Gokus power level according to the official Dragon Ball Z episode _________________ ISO 9000 is the ISOs standard for Quality Management System in production environments 9001 - ISO 9001 is part of... Look up ten thousand in Wiktionary, the free dictionary. ... One hundred thousand (100000) is the natural number following 99999 and preceding 100001. ... One million (1,000,000), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001. ... Ten million (10,000,000) is the natural number following 9999999 and preceding 10000001. ... One hundred million (100,000,000) is the natural number following 99999999 and preceding 100000001. ... This list compares various sizes of positive numbers, including counts of things, dimensionless numbers and probabilities. ...

Powers of ten

See: Orders of magnitude (numbers)

This list compares various sizes of positive numbers, including counts of things, dimensionless numbers and probabilities. ...

Integers

The integers are commonly denoted by the above symbol. ...

Notable integers

Other numbers that are notable for their mathematical properties or cultural meanings include:

Minus forty is the unique temperature (in degrees) at which the Celsius and Fahrenheit scales read the same; it is often referred to as 40 below. ... In mathematics, −1 is the integer greater than negative two (−2) and less than 0. ... 211 is the natural number between 210 and 212. ... 221 (two hundred [and] twenty-one) is the natural number following 220 and preceding 222. ... 222 (two hundred [and] twenty-two) is the natural number following 221 and preceding 223. ... 223 is the natural number between 222 and 224. ... 227 is the natural number between 226 and 228. ... 228 is the natural number between 227 and 229. ... 229 is the natural number between 228 and 230. ... 233 is the natural number between 232 and 234. ... 235 is the integer after 234 and before 236. ... 239 (two hundred [and] thirty-nine) is the natural number following 238 and preceding 240. ... 241 is the natural number between 240 and 242. ... 242 is the natural number following 241 and preceding 243. ... 251 is the natural number between 250 and 252. ... 255 (two hundred [and] fifty-five, CCLV) is the natural number following 254 and preceding 256. ... 256 (two hundred [and] fifty-six, CCLVI) is the natural number following 255 and preceding 257. ... 257 is the natural number between 256 and 258. ... 263 is the natural number between 262 and 264. ... 269 is the natural number between 268 and 270. ... Two hundred seventy-three (273, CCLXXIII) is a natural number that comes after 272 and before 274. ... Two hundred eighty-four (284, CCLXXXIV) is the natural number following 283 and preceding 285. ... 360(Three hundred sixty) is the natural number following 359 and preceding 361. ... 420 is the natural number following 419 and preceding 421. ... 451 (Four hundred and fifty-one) is the natural number following 450 and preceding 452. ... Four hundred and ninety-six is the natural number following four hundred and ninety-five and preceding four hundred and ninety-seven. ... 555 is the natural number following 554 and preceding 556. ... 666 is the natural number following 665 and preceding 667. ... Seven hundred twenty is the natural number following 719 and preceding 721. ... 786 is the integer coming after 785 and before 787. ... 911 (nine hundred eleven) is the number following 910 and preceding 912. ... 1001 is the natural number preceding 1002 and following 1000. ... 1089 is the number after 1088 and before 1090. ... This article does not adequately cite its references or sources. ... 1729 Cardinal One thousand seven hundred [and] twenty-nine Ordinal 1729th Factorization Divisors 7, 13, 19, 91, 133, 247 Roman numeral MDCCXXIX Binary 11011000001 Octal 3301 Duodecimal 1001 Hexadecimal 6C1 1729 is known as the Hardy-Ramanujan number, after a famous anecdote of the British mathematician G. H. Hardy regarding... 3600 is a number that is equal to 3000 + 600. ... 6174 is known as Kaprekars constant or Kaprekars Operation[1][2][3] after the Indian mathematician D. R. Kaprekar. ... Cardinal seven thousand seven hundred [and] forty-four Ordinal 7744th (seven thousand seven hundred [and] forty-fourth) Factorization Divisors 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 242, 352, 484, 704, 968, 1,936, 3,872 Roman numeral Binary 1111001000000 Octal 17100 Duodecimal 4594 Hexadecimal 1E40 7... Cardinal eight thousand one hundred [and] twenty-eight Ordinal 8128th (eight thousand one hundred [and] twenty-eighth) Factorization Divisors 2, 4, 8, 11, 16, 22, 32, 44, 64, 127, 254, 508, 1,016, 2,032, 4,064 Roman numeral Binary 1111111000000 Octal 17700 Duodecimal 4854 Hexadecimal 1FC0 8,128 is... The number 69,105 was used as an in-joke at the United States computer game manufacturer Infocom. ... 142,857 is the best-known cyclic number. ... 6000000 is the number after 5999999 and before 6000001. ...

Named integers

Grahams number, named after Ronald Graham, is often described as the largest number that has ever been seriously used in a mathematical proof. ... This article is about the number 1729. ... In number theory, Skewes number is by definition the smallest natural number x for which π(x) − Li(x) ≥ 0 where π(x) is the prime counting function and Li(x) is the offset logarithmic integral. ... In mathematics, Mosers polygon notation is a means of expressing certain extremely large numbers. ... The Number of the Beast is a concept from the Book of Revelation of the New Testament of the Christian Bible. ... 6174 is known as Kaprekars constant or Kaprekars Operation[1][2][3] after the Indian mathematician D. R. Kaprekar. ...

Prime numbers

A prime number is a positive integer which has exactly two divisors: one and itself. In mathematics, a prime number (or a prime) is a natural number that has exactly two (distinct) natural number divisors, which are 1 and the prime number itself. ...



The first 100 prime numbers: There are infinitely many prime numbers. ...


2 3 5 7 11 13 17 19 23 29
31 37 41 43 47 53 59 61 67 71
73 79 83 89 97 101 103 107 109 113
127 131 137 139 149 151 157 163 167 173
179 181 191 193 197 199 211 223 227 229
233 239 241 251 257 263 269 271 277 281
283 293 307 311 313 317 331 337 347 349
353 359 367 373 379 383 389 397 401 409
419 421 431 433 439 443 449 457 461 463
467 479 487 491 499 503 509 521 523 541

“II” redirects here. ... This article discusses the number three. ... Look up five in Wiktionary, the free dictionary. ... Seven Days of Creation - 1765 book, title page Seven (7) is the sixth successor of one (1). ... 11 (eleven) is the natural number following 10 and preceding 12. ... 13 (thirteen) is the natural number following 12 and preceding 14. ... 17 (seventeen) is the natural number following 16 and preceding 18. ... 19 (nineteen) is the natural number following 18 and preceding 20. ... This article is about the number 23. ... 29 (twenty-nine) is the natural number following 28 and preceding 30. ... 31 (thirty-one) is the natural number following 30 and preceding 32. ... 37 (thirty-seven) is the natural number following 36 and preceding 38. ... 41 (forty-one) is the natural number following 40 and preceding 42. ... 43 (forty-three) is the natural number following 42 and preceding 44. ... 47 (forty-seven) is the natural number following 46 and followed by 48. ... 53 (fifty-three) is the natural number following 52 and preceding 54. ... 59 (fifty-nine) is the natural number following 58 and preceding 60. ... 61 (sixty-one) is the natural number following 60 and preceding 62. ... 67 is the natural number following 66 and preceding 68. ... 71 is the natural number following 70 and preceding 72. ... 73 (seventy-three) is the natural number following 72 and preceding 74. ... 79 (seventy-nine) is the natural number following 78 and preceding 80. ... 83 (eighty-three) is the natural number following 82 and preceding 84. ... 89 (eighty-nine) is the natural number following 88 and preceding 90. ... 97 is the natural number following 96 and preceding 98. ... 101 (one hundred [and] one) is the natural number following 100 and preceding 102. ... 103 is the natural number following 102 and preceding 104. ... 107 is the natural number following 106 and preceding 108. ... 109 is the natural number following 108 and preceding 110. ... 113 is the natural number following 112 and preceding 114. ... 127 is the natural number following 126 and preceding 128. ... 131 is the natural number following 130 and preceding 132. ... 137 is the natural number following 136 and preceding 138. ... 139 (One hundred thirty-nine) is the natural number following 138 and preceding 140. ... 149 is the natural number between 148 and 150. ... 151 is a natural number. ... 157 is the number equal to 100 + 50 + 7, following 156 and preceding 158. ... 163 is the natural number following one hundred sixty-two and preceding one hundred sixty-four. ... 167 is the natural number following 166 and preceding 168. ... 173 is the natural number between 172 and 174. ... 179 is the natural number between 178 and 180. ... 181 is the natural number between 180 and 182. ... 191 is the natural number between 190 and 192. ... 193 is the natural number between 192 and 194. ... 197 is the natural number between 196 and 198. ... 199 is the natural number between 198 and 200. ... 211 is the natural number between 210 and 212. ... 223 is the natural number between 222 and 224. ... 227 is the natural number between 226 and 228. ... 229 is the natural number between 228 and 230. ... 233 is the natural number between 232 and 234. ... 239 (two hundred [and] thirty-nine) is the natural number following 238 and preceding 240. ... 241 is the natural number between 240 and 242. ... 251 is the natural number between 250 and 252. ... 257 is the natural number between 256 and 258. ... 263 is the natural number between 262 and 264. ... 269 is the natural number between 268 and 270. ...

Perfect numbers

A perfect number is an integer which is the sum of its positive proper divisors (all divisors except itself). In mathematics, a perfect number is defined as an integer which is the sum of its proper positive divisors, that is, the sum of the positive divisors not including the number. ...


The first ten perfect numbers:


1 6
2 28
3 496
4 8 128
5 33 550 336
6 8 589 869 056
7 137 438 691 328
8 2 305 843 008 139 952 128
9 2 658 455 991 569 831 744 654 692 615 953 842 176
10    191 561 942 608 236 107 294 793 378 084 303 638 130 997 321 548 169 216

Cardinal numbers

In the following tables, [and] indicates that the word and is used in some dialects (such as British English), and omitted in other dialects (such as American English). Aleph-0, the smallest infinite cardinal In mathematics, cardinal numbers, or cardinals for short, are a generalized kind of number used to denote the size of a set. ... A dialect (from the Greek word διάλεκτος, dialektos) is a variety of a language characteristic of a particular group of the languages speakers. ... British English (BrE) is a broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere. ... For other uses, see American English (disambiguation). ...


Small numbers

This table demonstrates the standard English construction of small cardinal numbers up to ten million -- names for which all variants of English agree.

Value Name Alternate names
0 Zero aught, cipher, cypher, goose egg, nada, naught, nil, none, nought, nowt, null, ought, oh, squat, zed, zilch, zip
1 One ace, single, singleton, unary, unit, unity
2 Two binary, brace, couple, couplet, distich, deuce, double, doubleton, duad, duality, duet, duo, dyad, pair, span, twain, twosome, yoke
3 Three deuce-ace, leash, set, tercet, ternary, ternion, terzetto, threesome, tierce, trey, triad, trine, trinity, trio, triplet, troika
4 Four foursome, quadruplet, quatern, quaternary, quaternion, quaternity, quartet, tetrad
5 Five cinque, fin, fivesome, pentad, quint, quintet, quintuplet
6 Six half dozen, hexad, sestet, sextet, sextuplet, sise
7 Seven heptad, septet, septuplet
8 Eight octad, octave, octet, octonary, octuplet, ogdoad, byte (in computing terms)
9 Nine ennead
10 Ten deca
11 Eleven
12 Twelve dozen
13 Thirteen baker's dozen, long dozen
14 Fourteen
15 Fifteen
16 Sixteen
17 Seventeen
18 Eighteen
19 Nineteen
20 Twenty score
21 Twenty-one
22 Twenty-two
23 Twenty-three
24 Twenty-four two dozen
25 Twenty-five
26 Twenty-six
27 Twenty-seven
28 Twenty-eight
29 Twenty-nine
30 Thirty
31 Thirty-one
40 Forty
50 Fifty Half - century
60 Sixty shock
70 Seventy three-score and ten
80 Eighty four-score
87 Eighty-seven four-score and seven
90 Ninety
100 One hundred centred, century, ton, short hundred
101 One hundred [and] one
110 One hundred [and] ten
111 One hundred [and] eleven
120 One hundred [and] twenty long hundred, great hundred, (obsolete) hundred
121 One hundred [and] twenty-one
144 One hundred [and] forty-four gross, dozen dozen, small gross
200 Two hundred
300 Three hundred
666 Six Hundred [and] sixty-six Number of the Beast
1 000 One thousand chiliad, grand (or G), thou, yard, kilo (often shortened to K)
1 001 One thousand [and] one
1 010 One thousand [and] ten
1 011 One thousand [and] eleven
1 024 One thousand [and] twenty-four kilo (in computing, see binary prefix) (often shortened to K)
1 100 One thousand one hundred
1 101 One thousand one hundred [and] one
1 728 One thousand seven hundred [and] twenty-eight great gross, long gross, dozen gross
2 000 Two thousand
10 000 Ten thousand myriad
100 000 One hundred thousand lakh
1 000 000 One million meg, mil, (often shortened to M)
1 048 576 One million forty-eight thousand five hundred [and] seventy-six meg (in computing, see binary prefix) (often shortened to M)
10 000 000 Ten million crore

A brace of something is a way of defining the quantity of them as there being two of the items. ... Thirteen items in a rectangular space, 3+2+3+2+3 arrangement with aspect ratio near 3:2 Thirteen items in a rectangular space, 4+5+4 arrangement with aspect ratio near 11:6 A bakers dozen, also known as long dozen, is 13, one more than a proper... The Gettysburg Address is the most famous speech of U.S. President Abraham Lincoln and one of the most quoted speeches in United States history. ... Categories: | | ... The Number of the Beast is a concept from the Book of Revelation of the New Testament of the Christian Bible. ... Memory (Random Access Memory) Look up computing in Wiktionary, the free dictionary. ... In computing, binary prefixes can be used to quantify large numbers where powers of two are more useful than powers of ten. ... Myriad is a classical Greek name for the number 104 = 10 000, or a group of 10 000 people, etc. ... A lakh (Hindi: लाख, Urdu: Ù„Ú©Ú¾, Bengali: , Tamil : இலட்சம்) is a unit in the Indian numbering system, widely used both in official and other contexts in Bangladesh, India, Sri Lanka, and Pakistan. ... Memory (Random Access Memory) Look up computing in Wiktionary, the free dictionary. ... In computing, binary prefixes can be used to quantify large numbers where powers of two are more useful than powers of ten. ... A crore is a unit in the Indian numbering system, still widely used in Bangladesh, India, Myanmar, Sri Lanka, and Pakistan. ...

English names for powers of 10

This table compares the English names of cardinal numbers according to various American, British, and Continental European conventions. See names of numbers in English or English-language numerals for more information on naming numbers. Here are examples of how to name numbers in English. ... See also List of numbers (to be merged) There are two main English-language systems of number names: the short scale system (used in the United States, Canada and much of the English-speaking world) and the long scale system (used in most Germanic and Romance languages). ...

Short scale Long scale Power
Value American & Modern British Traditional British
(Nicolas Chuquet)
Continental European
(Jacques Peletier du Mans)
of a thousand of a million
100 One 1000-1+1 10000000
101 Ten
102 Hundred
103 Thousand 10000+1 10000000.5
106 Million 10001+1 10000001
109 Billion Thousand million Milliard 10002+1 10000001.5
1012 Trillion Billion 10003+1 10000002
1015 Quadrillion Thousand billion Billiard 10004+1 10000002.5
1018 Quintillion Trillion 10005+1 10000003
1021 Sextillion Thousand trillion Trilliard 10006+1 10000003.5
1024 Septillion Quadrillion 10007+1 10000004
1027 Octillion Thousand quadrillion Quadrilliard 10008+1 10000004.5
1030 Nonillion Quintillion 10009+1 10000005
1033 Decillion Thousand quintillion Quintilliard 100010+1 10000005.5
1036 Undecillion Sextillion 100011+1 10000006
1039 Duodecillion Thousand sextillion Sextilliard 100012+1 10000006.5
1042 Tredecillion Septillion 100013+1 10000007
1045 Quattuordecillion Thousand septillion Septilliard 100014+1 10000007.5
1048 Quindecillion Octillion 100015+1 10000008
1051 Sexdecillion Thousand octillion Octilliard 100016+1 10000008.5
1054 Septendecillion Nonillion 100017+1 10000009
1057 Octodecillion Thousand nonillion Nonilliard 100018+1 10000009.5
1060 Novemdecillion Decillion 100019+1 100000010
1063 Vigintillion Thousand decillion Decilliard 100020+1 100000010.5
1066 Unvigintillion Undecillion 100021+1 100000011
1069 Duovigintillion Thousand undecillion Undecilliard 100022+1 100000011.5
1072 Trevigintillion Duodecillion 100023+1 100000012
1075 Quattuorvigintillion ... ... 100024+1 100000011.5
... ... ... ... ...
1093 Trigintillion Thousand quindecillion Quindecilliard 100030+1 100000015.5
... ... ... ... ...
10120 Novemtrigintillion Vigintillion 100039+1 100000020
10123 Quadragintillion Thousand vigintillion Vigintilliard 100040+1 100000020.5
... ... ... ... ...
10153 Quinquagintillion Thousand duovigintillion Duovigintilliard 100050+1 100000025.5
... ... ... ... ...
10180 Novemquinquagintillion Trigintillion 100059+1 100000030
10183 Sexagintillion Thousand trigintillion Trigintilliard 100060+1 100000030.5
... ... ... ... ...
10213 Septuagintillion Thousand quintrigintillion Quintrigintilliard 100070+1 100000035.5
... ... ... ... ...
10240 Novemseptuagintillion Quadragintillion 100079+1 100000040
10243 Octogintillion Thousand quadragintillion Quadragintilliard 100080+1 100000040.5
... ... ... ... ...
10273 Nonagintillion Thousand quinquadragintillion Quinquadragintilliard 100090+1 100000045.5
... ... ... ... ...
10300 Novemnonagintillion Quinquagintillion 100099+1 100000050
10303 Centillion Thousand quinquagintillion Quinquagintilliard 1000100+1 100000050.5
... ... ... ...
10360 Sexagintillion 1000119+1 100000060
10420 Septuagintillion 1000139+1 100000070
10480 Octogintillion 1000159+1 100000080
10540 Nonagintillion 1000179+1 100000090
10600 Centillion 1000199+1 1000000100
10603 ducentillion Thousand Centillion Centilliard 1000200+1 1000000100.5

The long and short scales are two different numerical systems used throughout the world. ... The long and short scales are two different numerical systems used throughout the world. ... Nicolas Chuquet (born 1445 (some sources say c. ... Jacques Peletier du Mans (1517 Le Mans – 1582 Paris) was a humanist, poet and mathematician of the French Renaissance. ... The number centillion refers to different quantities based on locality of usage. ... The number centillion refers to different quantities based on locality of usage. ... The standard dictionary numbers Throughout this article, exponential or scientific notation is used. ... The number centillion refers to different quantities based on locality of usage. ... The standard dictionary numbers Throughout this article, exponential or scientific notation is used. ...

Proposed systematic names for powers of 10

Gillion system

As proposed by Russ Rowlett, based on Greek-derived numerical prefixes: A numerical prefix is a prefix that denotes a number, which is usually a multiplier for the thing being prefixed. ...

Value Name
103 Thousand
106 Million
109 Gillion
1012 Tetrillion
1015 Pentillion
1018 Hexillion
1021 Heptillion
1024 Oktillion
1027 Ennillion
1030 Dekillion
Value Name
1033 Hendekillion
1036 Dodekillion
1039 Trisdekillion
1042 Tetradekillion
1045 Pentadekillion
1048 Hexadekillion
1051 Heptadekillion
1054 Oktadekillion
1057 Enneadekillion
1060 Icosillion
Value Name
1063 Icosihenillion
1066 Icosidillion
1069 Icositrillion
1072 Icositetrillion
1075 Icosipentillion
1078 Icosihexillion
1081 Icosiheptillion
1084 Icosioktillion
1087 Icosiennillion
1090 Triacontillion

Myriad system

Proposed by Donald E. Knuth: Donald Knuth adapted the familiar naming schemes to handle much larger numbers, dodging ambiguity by changing the -illion to -yllion. ...

Value Name Notation
100 One 1
101 Ten 10
102 Hundred 100
103 Ten hundred 1000
104 Myriad 1,0000
105 Ten myriad 10,0000
106 Hundred myriad 100,0000
107 Ten hundred myriad 1000,0000
108 Myllion 1,0000,0000
1012 Myriad myllion 1,0000,0000,0000
1016 Byllion 1,0000,0000,0000,0000
1024 Myllion byllion 1,0000,0000:0000,0000;0000,0000
1032 Tryllion 1 0000,0000;0000,0000:0000,0000;0000,0000
1064 Quadryllion 1'0000,0000;0000,0000:0000,0000;0000,0000 0000,0000;0000,0000:0000,0000;0000,0000
10128 Quintyllion
10256 Sextyllion
10512 Septyllion
101024 Octyllion
102048 Nonyllion
104096 Decyllion
108192 Undecyllion
1016,384 Duodecyllion
1032,768 Tredecyllion
1065,536 Quattuordecyllion
10131,072 Quindecyllion
10262,144 Sexdecyllion
10524,288 Septendecyllion
101,048,576 Octodecyllion
102,097,152 Novemdecyllion
104,194,304 Vigintyllion
104,294,967,296 Trigintyllion
{10}^{,! 4 * 2^{40}} Ragintyllion
{10}^{,! 4 * 2^{50}} Quinquagintyllion
{10}^{,! 4 * 2^{60}} Sexagintyllion
{10}^{,! 4 * 2^{70}} Septuagintyllion
{10}^{,! 4 * 2^{80}} Octogintyllion
{10}^{,! 4 * 2^{90}} Nonagintyllion
{10}^{,! 4 * 2^{100}} Centyllion
{10}^{,! 4 * 2^{1000}} Millyllion
{10}^{,! 4 * 2^{10000}} Myryllion

Googol and others
10100 Googol
{10}^{,!10^{100}} Googolplex
10-N N-minex
10N N-plex

A googol is the large number 10100, that is, the digit 1 followed by one hundred zeros (in decimal representation). ... Googolplex is the number . ... // Throughout this article, exponential or scientific notation is used. ...

SI-derived
Value SI prefix Name Binary prefix Value
1 000 K Kilo (K) Ki 1024
1 000 000 M Meg (M) Mi 1 048 576
1 000 000 000 G Gig Gi 1 073 741 824

An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol) to form a decimal multiple or submultiple. ... In computing, binary prefixes can be used to quantify large numbers where powers of two are more useful than powers of ten. ...

Fractional numbers

This is a table of English names for positive rational numbers less than or equal to 1. It also lists alternative names, but there is no widespread convention for the names of extremely small positive numbers. A cake divided into four equal quarters. ... In mathematics, a rational number (commonly called a fraction) is a ratio or quotient of two integers, usually written as the vulgar fraction a/b, where b is not zero. ...


Keep in mind that rational numbers like 0.12 can be represented in infinitely many ways, e.g. zero-point-one-two (0.12), twelve percent (12%), three twenty-fifths left({3 over 25}right), nine seventy-fifths left({9 over 75} right), six fiftieths left({6 over 50}right), twelve hundredths left({12 over 100}right), twenty-four two-hundredths left({24 over 200}right), etc. Infinity is a word carrying a number of different meanings in mathematics, philosophy, theology and everyday life. ... A percentage is a way of expressing a proportion, a ratio or a fraction as a whole number, by using 100 as the denominator. ...

Value Fraction Common names Alternative names
1 1 over 1 One 0.999...
0.9 9 over 10 Nine tenths, zero point nine
0.8 4 over 5 Four fifths, eight tenths, zero point eight
0.7 7 over 10 Seven tenths, zero point seven
0.6 3 over 5 Three fifths, six tenths, zero point six
0.5 1 over 2 One half, five tenths, zero point five
0.4 2 over 5 Two fifths, four tenths, zero point four
0.3 (333 333)... 1 over 3 One third
0.3 3 over 10 Three tenths, zero point three
0.25 1 over 4 One quarter, one fourth, twenty-five hundredths, zero point two five
0.2 1 over 5 One fifth, two tenths, zero point two
0.16 (666 666)... 1 over 6 One sixth
0.142 857 (142 857)... 1 over 7 One seventh
0.125 1 over 8 One eighth, one-hundred-[and]-twenty-five thousandths, zero point one two five
0.1 (111 111)... 1 over 9 One ninth
0.1 1 over 10 One tenth, zero point one One perdecime, one perdime
0.090 (909 090)... 1 over 11 One eleventh
0.09 9 over 100 Nine hundredths, zero point zero nine
0.083 (333 333)... 1 over 12 One twelfth
0.08 2 over 25 Two twenty-fifths, eight hundredths, zero point zero eight
0.0625 1 over 16 One sixteenth, six-hundred-[and]-twenty-five ten-thousandths, zero point zero six two five
0.05 1 over 20 One twentieth, zero point zero five
0.047 619 (047 619)... 1 over 21 One twenty-first
0.045 (454 545)... 1 over 22 One twenty-second
0.043 478 260 869 565 217 3913 (043 478)... 1 over 23 One twenty-third
0.03 (333 333)... 1 over 30 One thirtieth
0.016 (666 666)... 1 over 60 One sixtieth One minute
0.012345679 (012345679) 1 over 81 One eighty-first
0.01 1 over 100 One hundredth, zero point zero one One percent
0.001 1 over 1000 One thousandth, zero point zero zero one One permille
0.000 27 (777 777)... 1 over 3600 One thirty-six hundredth One second
0.000 1 1 over 10000 One ten-thousandth, zero point zero zero zero one One myriadth, one permyria, one permyriad, one basis point
0.000 01 1 over 10^5 One hundred-thousandth One lakhth, one perlakh
0.000 001 1 over 10^6 One millionth One perion, one ppm
0.000 000 1 1 over 10^7 One ten-millionth One crorth, one percrore
0.000 000 01 1 over 10^8 One hundred-millionth One awkth, one perawk
0.000 000 001 1 over 10^9 One billionth (in some dialects) One ppb
0 0 over 1 Zero

In mathematics, the recurring decimal 0. ... One half is the irreducible fraction resulting from dividing one by two (½), or any number by its double; multiplication by one half is equivalent to division by two. ... Look up quarter in Wiktionary, the free dictionary. ... A minute is a unit of time equal to 1/60th of an hour and to 60 seconds. ... A percentage is a way of expressing a proportion, a ratio or a fraction as a whole number, by using 100 as the denominator. ... A permille or per mille is a tenth of a percent or one part per thousand. ... A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 ≈ 7. ... unit that is equal to 1/100th of 1%, and is used to denote the change in a financial instrument. ... Parts per million (ppm) is a measure of concentration that is used where low levels of concentration are significant. ... Parts per billion (ppb) is a measure of concentration that is used where low levels of concentration are significant. ...

Irrational numbers

In mathematics, an irrational number is any real number that is not a rational number, i. ...

Algebraic numbers

Expression Value Notes
{sqrt{5} - 1} over 2 0.618 033 988 749 894 848 204 586 834 366... Golden ratio conjugate left(hatphiright), reciprocal of and one less than the golden ratio.
sqrt[12]{2} 1.059 463 094 359 295 264 561 825 294 946... Twelfth root of two.
Proportion between the frequencies of adjacent semitones in the equal temperament scale.
sqrt[3]{2} 1.259 921 049 894 873 164 767 210 607 278... Cube root of two.
Length of the edge of a cube with volume two. See doubling the cube for the significance of this number.
sqrt[3]{frac{1}{2}+frac{1}{6}sqrt{frac{23}{3}}}+
sqrt[3]{frac{1}{2}-frac{1}{6}sqrt{frac{23}{3}}}
1.324 717 957 244 746 025 960 908 854 478... Plastic number.
sqrt{2} 1.414 213 562 373 095 048 801 688 724 210... sqrt{2} = 2 sin 45^circ = 2 cos 45^circ
Square root of two a.k.a. Pythagoras' constant.
Ratio of diagonal to side length in a square.
Proportion between the sides of paper sizes in the ISO 216 series (originally DIN 476 series).
{sqrt{5} + 1} over 2 1.618 033 988 749 894 848 204 586 834 366... Golden ratio left(phiright).
sqrt{3} 1.732 050 807 568 877 193 176 604 123 437... sqrt{3} = 2 sin 60^circ = 2 cos 30^circ
Square root of three a.k.a. the measure of the fish.
Length of the diagonal of a cube with edge length 1.
Length of the diagonal of a 1 times sqrt{2} rectangle.
Altitude of an equilateral triangle with side length 2.
Twice the altitude of an equilateral triangle with side length 1.
Altitude of a regular hexagon with side length 1 and diagonal length 2.
sqrt{5} 2.236 067 977 499 789 805 051 477 742 381... Square root of five.
Length of the diagonal of a 1 times 2 rectangle.
Length of the diagonal of a sqrt{2} times sqrt{3} rectangle.
Length of the diagonal of a 1 times sqrt{2} times sqrt{2} rectangular box.
sqrt{2} + 1 2.414 213 562 373 095 048 801 688 724 210... Silver ratio left(delta_Sright).
sqrt{6} 2.449 489 742 783 177 881 335 632 264 381... sqrt{2} cdot sqrt{3} = area of a sqrt{2} times sqrt{3} rectangle.
Length of the diagonal of a 1 times 1 times 2 rectangular box.
Length of the diagonal of a 1 times sqrt{5} rectangle.
Length of the diagonal of a 2 times sqrt{2} rectangle.
Length of the diagonal of a sqrt{3} times sqrt{3} rectangle.
sqrt{7} 2.645 751 311 064 590 716 171 096 573 817... Length of the diagonal of a 1 times 2 times sqrt{2} rectangular box.
Length of the diagonal of a 1 times sqrt{6} rectangle.
Length of the diagonal of a 2 times sqrt{3} rectangle.
Length of the diagonal of a sqrt{2} times sqrt{5} rectangle.
sqrt{8} 2.828 427 124 746 190 290 949 243 717 478... 2 sqrt{2}
Volume of a cube with edge length sqrt{2}.
Length of the diagonal of a 2 times 2 rectangle.
Length of the diagonal of a 1 times sqrt{7} rectangle.
Length of the diagonal of a sqrt{2} times sqrt{6} rectangle.
Length of the diagonal of a sqrt{3} times sqrt{5} rectangle.
sqrt{10} 3.162 277 660 168 379 522 787 063 251 599... sqrt{2} cdot sqrt{5} = area of a sqrt{2} times sqrt{5} rectangle.
Length of the diagonal of a 1 times 3 rectangle.
Length of the diagonal of a 2 times sqrt{6} rectangle.
Length of the diagonal of a sqrt{3} times sqrt{7} rectangle.
Length of the diagonal of a sqrt{5} times sqrt{5} rectangle.
sqrt{11} 3.316 624 790 355 399 849 114 932 736 671 Length of the diagonal of a 1 times 1 times 3 rectangular box.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
3.464 101 615 137 754 587 054 892 683 012...
Length of the diagonal of a cube with edge length 2.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.
Length of the diagonal of a rectangle.

In mathematics, an algebraic number is any number that is a root of an algebraic equation, a non-zero polynomial with integer (or equivalently, rational) coefficients. ... The golden ratio is a number, approximately 1. ... Look up reciprocal in Wiktionary, the free dictionary. ... The golden section is a line segment sectioned into two according to the golden ratio. ... The Twelfth root of two is a quantity representing the frequency ratio between any two consecutive notes of a modern chromatic scale in equal temperament. ... A semitone (also known in the USA as a half step) is a musical interval. ... An equal temperament is a musical temperament -- that is, a system of tuning intended to approximate some form of just intonation -- in which an interval, usually the octave, is divided into a series of equal steps (equal frequency ratios). ... Plot of y = In mathematics, the cube root of a number, denoted or x1/3, is the number a such that a3 = x. ... A cube[1] is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. ... Doubling the cube is one of the three most famous geometric problems unsolvable by straightedge and compass alone. ... The plastic number (also known as the plastic constant or silver number) is the unique real solution of the equation and has the value which is approximately 1. ... The square root of two is the positive real number which, when multiplied by itself, gives a product of two. ... The square root of 2 is equal to the length of the hypotenuse of a right triangle with legs of length 1. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... For other uses, see Square. ... Comparison of the most common paper sizes. ... ISO 216 specifies international standard (ISO) paper sizes, used in most countries in the world today. ... Look up din in Wiktionary, the free dictionary. ... The golden section is a line segment sectioned into two according to the golden ratio. ... In mathematics, the principal square root of a non-negative real number is denoted and represents the non-negative real number whose square (the result of multiplying the number by itself) is . ... The Vesica Piscis The vesica piscis is a symbol made from two circles of the same radius, intersecting in such a way that the center of each circle lies on the circumference of the other. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... A cube[1] is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ... In geometry, an altitude of a triangle is a straight line through a vertex and perpendicular to (i. ... For alternate meanings, such as the musical instrument, see triangle (disambiguation). ... A regular hexagon. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ... In anatomy, the cuboid bone is a bone in the foot. ... The silver ratio is a mathematical constant. ... Area is a physical quantity expressing the size of a part of a surface. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... In anatomy, the cuboid bone is a bone in the foot. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... In anatomy, the cuboid bone is a bone in the foot. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ... The volume of a solid object is the three-dimensional concept of how much space it occupies, often quantified numerically. ... A cube[1] is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ... Area is a physical quantity expressing the size of a part of a surface. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... In anatomy, the cuboid bone is a bone in the foot. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ... In mathematics, diagonal has a geometric meaning, and a derived meaning as used in square tables and matrix terminology. ... A cube[1] is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. ... In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. ...

Transcendental numbers

  • Khinchin-Lévy constant: 1.186 569 110 4...[1]
  • Napier's constant: e = 2.718 281 828 459 045 235 360 287 471 353 ...
  • Pi: π = 3.141 592 653 589 793 238 462 643 383 279 ...

Suspected transcendentals: In mathematics, a transcendental number is any complex number that is not algebraic, that is, not the solution of a non-zero polynomial equation with integer (or, equivalently, rational) coefficients. ... In mathematics Lévys constant (sometimes known as the Khinchin-Lévy constant) occurs in an expression for the asymptotic behaviour of the denominators of the convergents of continued fractions. ... The mathematical constant e (occasionally called Eulers number after the Swiss mathematician Leonhard Euler, or Napiers constant in honor of the Scottish mathematician John Napier who introduced logarithms) is the base of the natural logarithm function. ... When a circles diameter is 1, its circumference is π. The mathematical constant π is an irrational real number, approximately equal to 3. ...

  • Euler-Mascheroni constant: γ = 0.577 215 664 901 532 860 606 512 090 082 ...
  • Gauss-Kuzmin-Wirsing constant: 0.303 663 002 9...[2]
  • Laplace limit: ε=0.662 743 419 3...[3]
  • Khinchin's constant: 2.685 452 001...[4]
  • Feigenbaum constants: δ = 4.6692 ... and α = 2.5029 ...

The Euler-Mascheroni constant is a mathematical constant, used mainly in number theory, and is defined as the limiting difference between the harmonic series and the natural logarithm: Its approximate value is γ ≈ 0. ... In mathematics, the Gauss-Kuzmin-Wirsing operator occurs in the study of continued fractions; it is also related to the Riemann zeta function. ... In number theory, Aleksandr Yakovlevich Khinchin proved that for almost all real numbers x, the infinitely many terms ai of the continued fraction expansion of x have an astonishing property: their geometric mean is a constant, known as Khinchins constant, which is independent of the value of x. ... There are two mathematical constants called Feigenbaum constants, named after mathematician Mitchell Feigenbaum. ...

Hypercomplex numbers

The term hypercomplex number has been used in mathematics for the elements of algebras that extend or go beyond complex number arithmetic. ...

Algebraic complex numbers

In mathematics, a complex number is a number of the form where a and b are real numbers, and i is the imaginary unit, with the property i 2 = −1. ... In mathematics, the imaginary unit (sometimes also represented by the Latin or the Greek iota) allows the real number system to be extended to the complex number system . ...

Other hypercomplex numbers

In mathematics, the quaternions are a non-commutative extension of the complex numbers. ... In mathematics, the octonions are a nonassociative extension of the quaternions. ... The sedenions form a 16-dimensional algebra over the reals obtained by applying the Cayley-Dickson construction to the octonions. ... A variety of dualities in mathematics are listed at duality (mathematics). ... In mathematics, an infinitesimal, or infinitely small number, is a number that is smaller in absolute value than any positive real number. ...

Transfinite numbers

Transfinite numbers, also known as infinite numbers, are numbers that are not finite. ... This article or section is not written in the formal tone expected of an encyclopedia article. ... In the branch of mathematics known as set theory, aleph usually refers to a series of numbers used to represent the cardinality (or size) of infinite sets. ... In the branch of mathematics known as set theory, aleph usually refers to a series of numbers used to represent the cardinality (or size) of infinite sets. ... In mathematics, the Hebrew letter (aleph) with various subscripts represents various infinite cardinal numbers (see aleph number). ... In mathematics, the cardinality of a set is a measure of the number of elements of the set. There are two approaches to cardinality – one which compares sets directly using bijections, injections, and surjections, and another which uses cardinal numbers. ... In mathematics, the word continuum sometimes denotes the real line. ...

Numbers representing measured quantities

The word pair, derived via the French words pair/paire from the Latin par equal, can mean: the French equivalent of peer, holder of a French Pairie, French high title roughly equivalent to a member of the British peerage 2 (number), two of something Couple, various senses for two joined... Look up binary in Wiktionary, the free dictionary. ... A numeral is a symbol or group of symbols, or a word in a natural language that represents a number. ... Dozen is another word for the number twelve. ... The duodecimal (also known as base-12 or dozenal) system is a numeral system using twelve as its base. ... Thirteen items in a rectangular space, 3+2+3+2+3 arrangement with aspect ratio near 3:2 Thirteen items in a rectangular space, 4+5+4 arrangement with aspect ratio near 11:6 A bakers dozen, also known as long dozen, is 13, one more than a proper... 20 (twenty) is the natural number following 19 and preceding 21. ... The vigesimal or base-20 numeral system is based on twenty (in the same way in which the ordinary decimal numeral system is based on ten). ... Look up gross, groß in Wiktionary, the free dictionary. ... A great gross is equal to a dozen gross, i. ... Avogadros number, also called Avogadros constant (NA), named after Amedeo Avogadro, is formally defined to be the number of carbon-12 atoms in 12 grams (0. ...

Numbers without specific values

See placeholder names

Placeholder names are words that refer to objects or people whose names are either irrelevant or unknown in the context which it is being discussed. ...

Bases

See also positional systems of numeral system for bases which might not be listed here. Negaternary is a non-standard positional numeral system in which numbers are written as sums of successive powers of -3. ... Negaternary is a numeral system in which numbers are written as sums of successive powers of -3. ... Negabinary (radix -2) is a non-standard positional numeral system used in the experimental Polish computers SKRZAT 1 and BINEG in 1950. ... Negabinary (radix -2) is a fairly obscure numeral system used in the experimental Polish computers SKRZAT 1 and BINEG in 1950. ... The unary numeral system (base-1) is the simplest numeral system to represent natural numbers: in order to represent a number N, an arbitrarily chosen symbol is repeated N times. ... Unary may mean Unary numeral system Unary operator — a kind of operator that has only one operand This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... The binary or base-two numeral system is a system for representing numbers in which a radix of two is used; that is, each digit in a binary numeral may have either of two different values. ... The binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. ... Ternary is the base 3 numeral system. ... Ternary or trinary is the base-3 numeral system. ... Trinary is an artistic language in David Brins Uplift series of science fiction novels, spoken largely by dolphins or neo-fins. ... Balanced ternary is a non-standard positional numeral system, useful for comparison logic. ... Quaternary is the base four numeral system. ... Quaternary is the base four numeral system. ... Quinary is the base five numeral system. ... Quinary (base-5) is a numeral system with five as the base. ... A senary numeral system is a base-six numeral system. ... A senary numeral system is a base-six numeral system. ... A senary numeral system is a base-six numeral system. ... The septenary numeral system is the base seven number system, and uses the digits 0-6. ... The septenary numeral system is the base seven number system, and uses the digits 0-6. ... The octal numeral system is the base_8 number system, and uses the digits 0–7. ... The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7. ... Nonary is a base 9 numeral system, typically using the digits 0-8, but not the digit 9. ... Nonary is a base 9 numeral system, typically using the digits 0-8, but not the digit 9. ... Decimal, or denary, notation is the most common way of writing the base 10 numeral system, which uses various symbols for ten distinct quantities (0, 1, 2, 3, 4, 5, 6, 7, 8 and 9, called digits) together with the decimal point and the sign symbols + (plus) and − (minus... The decimal (base ten or occasionally denary) numeral system has ten as its base. ... Duodecimal is a base 12 numeral system. ... The duodecimal (also known as base-12 or dozenal) system is a numeral system using twelve as its base. ... Duodecimal is a base 12 numeral system. ... Base-13, tridecimal, or tredecimal is a positional numeral system with thirteen as its base. ... The words Tredecimal and Tridecimal (i. ... The words Tredecimal and Tridecimal (i. ... In mathematics, hexadecimal or simply hex is a numeral system with a radix or base of 16 usually written using the symbols 0–9 and A–F or a–f. ... In mathematics and computer science, hexadecimal, base-16, or simply hex, is a numeral system with a radix, or base, of 16, usually written using the symbols 0–9 and A–F, or a–f. ... A vigesimal numeral system has a base of twenty. ... The vigesimal or base-20 numeral system is based on twenty (in the same way in which the ordinary decimal numeral system is based on ten). ... As there are 24 hours in a day a numbering system based upon 24, and as the base 12 is convenient here some examples of the base 24 (quadrovigesimal) system. ... As there are 24 hours in a day a numbering system based upon 24, and as the base 12 is convenient here some examples of the base 24 (quadrovigesimal) system. ... A Hexavigesimal numeral system has a base of twenty-six. ... A Hexavigesimal numeral system has a base of twenty-six. ... A Septemvigesimal numeral system has a base of twenty-seven. ... A Septemvigesimal numeral system has a base of twenty-seven. ... Base 30 or trigesimal is a positional numeral system using 30 as the radix. ... Base 30 or trigesimal is a positional numeral system using 30 as the radix. ... Base32 is a derivation of Base64 with the following additional properties: The resulting character set is all uppercase, which can often be beneficial when using a case-sensitive filesystem. ... Base 32 or duotrigesimal is a positional notation using a base of 32. ... Base 36 refers to a positional numeral system using 36 as the radix. ... Base 36 is a positional numeral system using 36 as the radix. ... Base 36 is a positional numeral system using 36 as the radix. ... Base 36 is a positional numeral system using 36 as the radix. ... Sexagesimal numbering is a numeral system with number 60 as the base. ... The sexagesimal (base-sixty) is a numeral system with sixty as the base. ... In computing, base64 is a data encoding scheme whereby binary-encoded data is converted to printable ASCII characters. ... Base 64 or quadrosexagesimal is a positional notation using a base of 64. ... Mixed radix numeral systems are more general than the usual ones in that the numerical base may vary from position to position. ... Golden ratio base refers to the use of the golden ratio, the irrational number ≈1. ... The Golden mean (φ) can be used as a number base. ... The quater-imaginary numeral system was first proposed by Donald Knuth in 1955, in a submission to a high-school science talent search. ... The quater-imaginary numeral system was first proposed by Donald Knuth in 1955, in a submission to a high-school science talent search. ... A numeral is a symbol or group of symbols, or a word in a natural language that represents a number. ...


See also

See also List of numbers (to be merged) There are two main English-language systems of number names: the short scale system (used in the United States, Canada and much of the English-speaking world) and the long scale system (used in most Germanic and Romance languages). ... The following is a table of the numbers 0 through 10 in a sample of the languages and writings of the world. ... A floating-point number is a digital representation for a number in a certain subset of the rational numbers, and is often used to approximate an arbitrary real number on a computer. ... A cake divided into four equal quarters. ... The interesting number paradox is a semi-humorous paradox that arises from attempting to classify numbers as interesting or dull. ... For information on how large numbers are named in English, see names of large numbers. ... There are infinitely many prime numbers. ... A mathematical constant is a quantity, usually a real number or a complex number, that arises naturally in mathematics and does not change. ... // Throughout this article, exponential or scientific notation is used. ... A negative number is a number that is less than zero, such as −3. ... Different cultures have different traditional numeral systems used for writing numbers and for naming large numbers. ... This list compares various sizes of positive numbers, including counts of things, dimensionless numbers and probabilities. ... Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc. ... An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol) to form a decimal multiple or submultiple. ... Within a set of positive numbers, a number is small if it is close to zero. ... In mathematics, the surreal numbers are a field containing the real numbers as well as infinite and infinitesimal numbers, respectively larger or smaller in absolute value than any positive real number, and therefore the surreals are algebraically similar to superreal numbers and hyperreal numbers. ... This table contains the integer factorization for the numbers from 1 to 1002. ...

Further reading

  • Kingdom of Infinite Number: A Field Guide by Bryan Bunch, W.H. Freeman & Company, 2001. ISBN 0-7167-4447-3

External links


  Results from FactBites:
 
List of numbers - definition of List of numbers in Encyclopedia (625 words)
Other numbers that are notable for their mathematical properties or cultural meanings include:
This is a table of English names for positive rational numbers less than 1.
It also lists alternative names, but there is no widespread convention for the names of extremely small positive numbers.
  More results at FactBites »

 
 

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