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5 (five) is a number, numeral, and glyph. It is the natural number following 4 and preceding 6. The binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. ... The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7. ... The duodecimal (also known as base-12 or dozenal) system is a numeral system using twelve as its base. ... 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 0â€“9 and Aâ€“F, or aâ€“f. ... 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). ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 151 languages. ... For other uses, see Number (disambiguation). ... A numeral is a symbol or group of symbols that represents a number. ... variant glyphs representing the character a (allographs of a) in the Zapfino typeface. ... In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... Look up four in Wiktionary, the free dictionary. ... Look up six in Wiktionary, the free dictionary. ...

Five is between 4 and 6 and is the third prime number, after 2 and 3, and before 7. Because it can be written as 2^(2^1)+1, five is classified as a Fermat prime. 5 is the third Sophie Germain prime, the first safe prime, and the third Mersenne prime exponent. Five is the first Wilson prime and the third factorial prime, also an alternating factorial. It is an Eisenstein prime with no imaginary part and real part of the form 3n − 1. It is also the only number that is part of more than one pair of twin primes. In mathematics, a prime number (or a prime) is a natural number greater than 1 which has exactly two distinct natural number divisors: 1 and itself. ... For other uses of 2, see 2 (disambiguation). ... This article is about the number. ... Seven Days of Creation - 1765 book, title page 7 (seven) is the natural number following 6 and preceding 8. ... In mathematics, a Fermat number, named after Pierre de Fermat who first studied them, is a positive integer of the form where n is a nonnegative integer. ... A prime number p is called a Sophie Germain prime if 2p + 1 is also prime. ... A safe prime is a prime number of the form 2p + 1, where p is also a prime. ... In mathematics, a Mersenne number is a number that is one less than a power of two. ... In mathematics, a Wilson prime is a certain kind of prime number. ... A factorial prime is a number that is one less or one more than a factorial and is also a prime number. ... An alternating factorial is the sum of the first n factorials with the odd-indexed factorials multiplied by âˆ’1 if n is even, and the even-indexed factorials multiplied by âˆ’1 if n is odd, resulting in an alternation of signs of the summands (or alternation of addition and subtraction... An Eisenstein prime is an Eisenstein integer aÏ‰ + b that has only two Eisenstein divisors, the complex cube root of unity and aÏ‰ + b itself. ... A twin prime is a prime number that differs from another prime number by two. ...

Five is conjectured to be the only odd untouchable number. An untouchable number is an integer that can not be expressed as the sum of the proper divisors of any integer. ...

The number 5 is the 5th Fibonacci number, being 2 plus 3. 5 is also a Pell number and a Markov number, appearing in solutions to the Markov Diophantine equation: (1, 2, 5), (1, 5, 13), (2, 5, 29), (5, 13, 194), (5, 29, 433), ... (A030452 lists Markov numbers that appear in solutions where one of the other two terms is 5). Whereas 5 is unique in the Fibonacci sequence, in the Perrin sequence 5 is both the fifth and sixth Perrin numbers. A tiling with squares whose sides are successive Fibonacci numbers in length In mathematics, the Fibonacci numbers are a sequence of numbers named after Leonardo of Pisa, known as Fibonacci. ... For other uses of 2, see 2 (disambiguation). ... This article is about the number. ... In mathematics, the Pell numbers and companion Pell numbers (Pell-Lucas numbers) are both sequences of integers. ... A Markov number or Markoff number is an integer x, y or z that is part of a solution to the Markov Diophantine equation The first few Markov numbers are 1, 2, 5, 13, 29, 34, 89, 169, 194, 233, 433, 610, 985, 1325, ... (sequence A002559 in OEIS) appearing in... In mathematics, the Perrin numbers are defined by the recurrence relation P(0) = 3, P(1) = 0, P(2) = 2, and P(n) = P(n âˆ’ 2) + P(n âˆ’ 3) for n > 2. ...

5 and 6 form a Ruth-Aaron pair under either definition. A Ruth-Aaron pair consists of two consecutive integers (e. ...

There are five solutions to Znám's problem of length 6. ZnÃ¡ms problem is the question of what sets of integers, of a given length, can be put together such that each integer in the set is a proper divisor of the product of the other integers in the set, plus 1. ...

Five is the second Sierpinski number of the first kind, and can be written as S2=(2^2)+1 Wacław Franciszek Sierpiński, was born on March 14, 1882 in Warsaw and died on October 21, 1969 in Warsaw. ...

While polynomial equations of degree 4 and below can be solved with radicals, equations of degree 5 and higher cannot generally be so solved. This is the Abel-Ruffini theorem. This is related to the fact that the symmetric group Sn is a solvable group for n ≤ 4 and not solvable for n ≥ 5. In mathematics, a polynomial is an expression that is constructed from one variable or more variables and constants, using only the operations of addition, subtraction, multiplication, and constant positive whole number exponents. ... Look up four in Wiktionary, the free dictionary. ... The Abel-Ruffini theorem states that there is no general solution in radicals to polynomial equations of degree five or higher. ... In mathematics, the symmetric group on a set X, denoted by SX or Sym(X), is the group whose underlying set is the set of all bijective functions from X to X, in which the group operation is that of composition of functions, i. ... In the history of mathematics, the origins of group theory lie in the search for a proof of the general unsolvability of quintic and higher equations, finally realized by Galois theory. ...

While all graphs with 4 or fewer vertices are planar, there exists a graph with 5 vertices which is not planar: K5, the complete graph with 5 vertices. In graph theory, a planar graph is a graph that can be drawn so that no edges intersect (or that can be embedded) in the plane. ... In the mathematical field of graph theory, a complete graph is a simple graph where an edge connects every pair of distinct vertices. ...

Five is also the number of Platonic solids. In geometry, a Platonic solid is a convex regular polyhedron. ...

A polygon with five sides is a pentagon. Figurate numbers representing pentagons (including five) are called pentagonal numbers. Five is also a square pyramidal number. Look up polygon in Wiktionary, the free dictionary. ... Look up pentagon in Wiktionary, the free dictionary. ... A figurate number is a number that can be represented as a regular and discrete geometric pattern (e. ... A visual representation of the first six pentagonal numbers A pentagonal number is a figurate number that extends the concept of triangular and square numbers to the pentagon, but, unlike the first two, the patterns involved in the construction of pentagonal numbers are not rotationally symmetrical. ... A pyramidal number, or square pyramidal number, is a figurate number that represents a pyramid with a base and four sides. ...

Five is the only prime number to end in the digit 5, because all other numbers written with a 5 in the ones-place under the decimal system are multiples of five. As a consequence of this, 5 is in base 10 a 1-automorphic number. In mathematics an automorphic number (sometimes referred to as a circular number) is a number whose square ends in the number itself. ...

Vulgar fractions with 5 or 2 in the denominator do not yield infinite decimal expansions, as is the case with most primes, because they are prime factors of ten, the base. When written in the decimal system, all multiples of 5 will end in either 5 or 0. In arithmetic, a vulgar fraction (or common fraction) consists of one integer divided by a non-zero integer. ... For other uses of 2, see 2 (disambiguation). ... A denominator is a name. ... For other uses, see Decimal (disambiguation). ... This article is about the number 10. ... Zero redirects here. ...

There are five Exceptional Lie groups. In mathematics, a simple Lie group is a Lie group which is also a simple group. ...

### List of basic calculations

Multiplication 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 50 100 1000
$5 times x$ 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 250 500 5000
Division 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
$5 div x$ 5 2.5 $1.overline{6}$ 1.25 1 $0.8overline{3}$ $0.overline{7}1428overline{5}$ 0.625 $0.overline{5}$ 0.5 $0.overline{4}overline{5}$ $0.41overline{6}$ $0.overline{3}8461overline{5}$ $0.3overline{5}7142overline{8}$ $0.overline{3}$
$x div 5$ 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
Exponentiation 1 2 3 4 5 6 7 8 9 10 11 12 13
$5 ^ x,$ 5 25 125 625 3125 15625 78125 390625 1953125 9765625 48828125 244140625 1220703125
$x ^ 5,$ 1 32 243 1024 3125 7776 16807 32768 59049 100000 161051 248832 371293

In mathematics, multiplication is an elementary arithmetic operation. ... This article is about the number 10. ... 15 (fifteen) is the natural number following 14 and preceding 16. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 25 (twenty-five) is the natural number following 24 and preceding 26. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 35 (thirty-five) is the natural number following 34 and preceding 36. ... 40 (forty) is the natural number following 39 and preceding 41. ... 45 (forty-five) is the natural number following 43 and followed by 47. ... 50 (fifty) is the number following 49 and preceding 51. ... 55 (fifty-five) is the natural number following 54 and preceding 56. ... 60 (sixty) is the natural number following 59 and preceding 61. ... 65 (sixty-five) is the natural number following 64 and preceding 66. ... Look up seventy in Wiktionary, the free dictionary. ... 75 (seventy-five) is the natural number following 74 and preceding 76. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 85 is the natural number following 84 and preceding 86. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 95 is the natural number following 94 and preceding 96. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ... 105 (one hundred [and] five) is the natural number following 104 and preceding 106. ... 110 (one hundred [and] ten) is the natural number following 109 and preceding 111. ... 115 is the natural number following 114 and preceding 116. ... 120 (one hundred twenty in American English; one hundred and twenty in British English) is the natural number following 119 and preceding 121. ... 125 is the natural number following 124 and preceding 126. ... 250 is the natural number following 249 and preceding 251. ... Five hundred is the natural number following four hundred ninety-nine and preceding five hundred one. ... Five thousand (5000) is the natural number following 4999 and preceding 5001. ... In mathematics, especially in elementary arithmetic, division is an arithmetic operation which is the inverse of multiplication. ... One redirects here. ... Look up eight in Wiktionary, the free dictionary. ... â€œExponentâ€ redirects here. ... 32 (thirty-two) is the natural number following 31 and preceding 33. ... 240 (two hundred [and] forty) is the natural number following 239 and preceding 241. ... One hundred thousand (100000) is the natural number following 99999 and preceding 100001. ...

## Evolution of the glyph

Image File history File links Evolution of the numeral 5 from the Brahmin Indians to the Europeans I drew this characters by hand and scanned them. ...

The evolution of our modern glyph for five cannot be neatly traced back to the Brahmin Indians quite the same way it can for 1 to 4. Later on the Kushana and Gupta Indians had among themselves several different glyphs which bear no resemblance to the modern glyph. The Nagari and Punjabi took these glyphs and all came up with glyphs that look like a lowercase "h" rotated 180°. The Ghubar Arabs transformed the glyph in several different ways, coming up with glyphs that look more like 4s or 3s than 5s.[1] It was from those characters that the Europeans finally came up with the modern 5, though from purely graphical evidence, it would be much easier to conclude that our modern 5 came from the Khmer[citation needed]. Khmer numerals are the numerals used in the Khmer language of Cambodia. ...

While the shape of the 5 character has an ascender in most modern typefaces, in typefaces with text figures the character usually has a descender, as, for example, in . The ascenders are the parts of the characters that lie above the midline, highlighted in red. ... â€œFontâ€ redirects here. ... Hoefler Text, a contemporary font, uses hanging or old style text figures. ... The descenders are the parts of the characters that lie below the baseline. ... Image File history File links The numerals 2, 5 and 6 written in text figures. ...

## Science

### Astronomy

The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... Globular Cluster M5 (also known as Messier Object 5, Messier 5, M5, or NGC 5904) is a globular cluster in the Serpens constellation. ... The Globular Cluster M80 in the constellation Scorpius is located about 28,000 light years from the Sun and contains hundreds of thousands of stars. ... Serpens (the snake) is one of the 88 modern constellations, and was also one of the 48 listed by Ptolemy. ... The New General Catalogue (NGC) is the best-known catalogue of deep sky objects in amateur astronomy. ... NGC 5 is an elliptical galaxy in the constellation Andromeda, approximately 212 million light years away from Earth. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... An example of a spiral galaxy, the Pinwheel Galaxy (also known as Messier 101 or NGC 5457) A spiral galaxy is a galaxy belonging to one of the three main classes of galaxy originally described by Edwin Hubble in his 1936 work â€œThe Realm of the Nebulaeâ€[1] and, as... This article is about the star grouping. ... Andromeda is a constellation named for the princess Andromeda (which is Greek for Ruler over men), a character in greek mythology. ... A Saros cycle is a period of 6585 + 1/3 days (approximately 18 years 10 days and 8 hours) which can be used to predict eclipses of the sun and the moon. ... Photo taken during the 1999 eclipse. ... is the 94th day of the year (95th in leap years) in the Gregorian calendar. ... is the 144th day of the year (145th in leap years) in the Gregorian calendar. ... (Redirected from 1422 BC) Centuries: 16th century BC - 15th century BC - 14th century BC Decades: 1470s BC 1460s BC 1450s BC 1440s BC 1430s BC - 1420s BC - 1410s BC 1400s BC 1390s BC 1380s BC 1370s BC Events and Trends Crete conquered by Mycenae (approximately 1420 BC) - start of the... Time lapse movie of the 3 March 2007 lunar eclipse A lunar eclipse occurs whenever the Moon passes through some portion of the Earthâ€™s shadow. ... is the 281st day of the year (282nd in leap years) in the Gregorian calendar. ... is the 83rd day of the year (84th in leap years) in the Gregorian calendar. ... Hertzsprung-Russell diagram The main sequence of the Hertzsprung-Russell diagram is the curve where the majority of stars are located in this diagram. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... Atmospheric pressure 0 kPa Amalthea (am-É™l-thee-É™, IPA: , Greek Î‘Î¼Î¬Î»Î¸ÎµÎ¹Î±) is the third moon of Jupiter (in order of distance from the planet), and the fifth in order of discovery, hence its Roman numeral designation of Jupiter V. It was discovered on September 9, 1892 by Edward Emerson Barnard using...

## Religion and culture

• The five sacred Sikh symbols prescribed by Guru Gobind Singh are commonly known as Panj Kakars or the 'Five Ks' because they start with letter K representing Kakka in the Punjabi language. They are: Kesh (unshorn hair), Kangha (the comb), Kara (the steel bracelet), Kachh (the soldiers shorts), and Kirpan (the sword).
• There are five basic "pillars" of Islam.
• Muslims pray to Allah five times a day *In Islam, particularly Shia Islam, the Panjetan or the Five Holy Purified Ones are the members of Muhammad's family including: Muhammad, Ali, Fatima, Hasan, Husayn and is often symbolically represented by an image of the Khamsa.
• The Torah contains five books—Genesis, Exodus, Leviticus, Numbers, and Deuteronomy—which are collectively called the Five Books of Moses, the Pentateuch (Greek for "five containers," referring to the scroll cases in which the books were kept), or Humash (חומש, Hebrew for "fifth")
• The book of Psalms is arranged into five books, paralleling the Five Books of Moses.
• The Khamsa, an ancient symbol shaped like a hand with five fingers, is used as a protective amulet by Jews
• According to some traditions of Maya mythology, we are now living in the Fifth World.
• In East Asian tradition, there are five elements: (water, fire, earth, wood and metal). The Japanese names for the days of the week, Tuesday through Saturday, come from these elements via the identification of the elements with the five planets visible with the naked eye. Also, the traditional Japanese calendar has a five-day weekly cycle that can be still observed in printed mixed calendars combining Western, Chinese-Buddhist and Japanese names for each weekday.
• In some cultures there are five cardinal directions, including the center.
• In Cantonese, "five" sounds like the word "not" (symbol: 唔). When five appears in front of a lucky number, e.g. "58", the result is considered unlucky.
• According to various mythologies, the universe is comprised of five classical elements: water, earth, air, fire and ether.
• In Greek Orthodox Christian mysticism, the number 5 symbolizes the Holy Spirit as the bearer of all life. In the monastic tradition of Mount Athos there exists a "hymn" to the Holy Spirit composed entirely and solely of repetitions of the word "pente" (Greek for "five")
• In Discordianism, 5 is seen as a very important number as demonstrated in the Law of Fives and The Pentabarf, which contains five rules. Each page of the Principia Discordia, the primary religious document in Discordianism, is also labeled with 5 digits.

## Sports

Jason Kidd wore the number five on his jersey while playing in the NBA.
• Kyle Busch's number in both the NEXTEL Cup Series and the Busch Series(no relation between the names). Also from 1994 until 2004 NASCAR champion Terry Labonte drove.
• In Formula One, the number 5 & 6 cars traditionally belonged to the Williams team, until the end of the 1995 Formula One Season. It was most synonymous with Nigel Mansell in the late 80s and early 90s.
• In professional Wrestling, if a wrestler grabs the ropes when he is in a submission hold, the attacking wrestler has up to a 5 count to break the hold until a disqualification is made. This is also the case for choking, grabbing the referee, or standing to the top of the turnbuckle. Contrary to belief, it is not a four count, as emphasized in WWE.
• The number of players of a basketball team on the court at a given time.
• Several players in the NBA have worn the number 5 on their jersey, including Hall of Fame caliber players Jason Kidd of the New Jersey Nets and most recently Kevin Garnett of the Boston Celtics. Bill Walton wore number 5 during the last few years of his career with the Boston Celtics.
• Also used in basketball to represent the position of center.
• The Olympic Games have five interlocked rings as their symbol, representing the number of inhabited continents represented by the Olympians (counting North America and South America as one continent).
• The number of kyu (pupil) grades in judo
• In rugby union, the number of the lock forward who usually jumps at number 4 in the line-out. It is also the number of points awarded for a try.
• In rugby league, the number of the left wing, and also the number of tackles the attacking team has to score a try before the handover.
• In baseball, five represents the third baseman's position.
• 5 is the uniform number of Hall of Fame Baseball players Hank Aaron, Luke Appling, George Brett, Lou Boudreau, Hank Greenberg, Johnny Bench, Joe DiMaggio, and Brooks Robinson.
• In hockey, the area between the goaltender's legs is known as the five-hole.
• Heisman Winner Reggie Bush wore the number 5 in college at the University of Southern California.
• Former Collingwood Magpies captain and member of the Team of the Century Nathan Buckley wore gurnsey number 5.
• The band Soilwork released the album Finger Number Five in 2003

## Technology

• The resin identification code used in recycling to identify polypropylene.
• In radio communication, the term "Five by five" is used to indicate perfect signal strength and clarity.
• The Pentium, coined by Intel Corporation, is a fifth-generation x86 architecture microprocessor.
• On most telephones, the 5 key is associated with the letters J, K, and L, but on the BlackBerry it is the key for G and H.
• On almost all devices with a numeric keypad such as telephones, computers, etc., the 5 key has a raised dot or raised bar to make dialing easier. Persons who are blind or have low vision find it useful to be able to feel the keys of a telephone. All other numbers can be found with their relative position around the 5 button. (On computer keyboards, the 5 key of the numpad has the raised dot or bar, but the 5 key that shifts with % does not).
• 5 is the most common number of gears for automobiles with manual transmission.

## Miscellaneous fields

The fives of all four suits in playing cards

Five is: Image File history File links ICS_Five. ... Image File history File links ICS_Five. ... The system of international maritime signal flags is a way of representing individual letters of the alphabet on ships or in nautical situations. ... Image File history File linksMetadata Size of this preview: 800 Ã— 534 pixel Image in higher resolution (1600 Ã— 1067 pixel, file size: 101 KB, MIME type: image/jpeg) A hand holding the four 5s in a standard deck of cards. ... Image File history File linksMetadata Size of this preview: 800 Ã— 534 pixel Image in higher resolution (1600 Ã— 1067 pixel, file size: 101 KB, MIME type: image/jpeg) A hand holding the four 5s in a standard deck of cards. ... Set of 78 French style playing cards with twenty two atouts, typically used to play French Tarot Set of 52 French style playing cards with two jokers Set of 52 Anglo-American style playing cards Some typical Anglo-American playing cards from the Bicycle brand Paul CÃ©zanne - The Card... THE TRUTH OF NUMBER FIVE once upon a time. ...

## References

1. ^ Georges Ifrah, The Universal History of Numbers: From Prehistory to the Invention of the Computer transl. David Bellos et al. London: The Harvill Press (1998): 394, Fig. 24.65
• Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 58 - 67

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 Persons with a disability, age 5+, 2000 (212 words) They were 16 to 64 years old and reported difficulty working at a job or business because of a physical, mental, or emotional condition lasting six months or more. Disability status was not tabulated for persons in institutions, people in the Armed Forces, and people under 5 years old. The percentage shown is calculated by dividing the number of persons with a disability by the number of civilian noninstitutionalized persons 5 years old and over.
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