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Encyclopedia > 70 (number)
 ← 70 71 72 73 74 75 76 77 78 79 → 69 (sixty-nine) is the natural number following 68 and preceding 70. ... 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 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. ... List of numbers — Integers This is a list of articles about numbers (not about numerals). ... The integers are commonly denoted by the above symbol. ... 0 10 20 30 40 50 60 70 80 90 → 0 (zero) is both a number and a numerical digit used to represent that number in numerals. ... 10 (ten) is an even natural number following 9 and preceding 11. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 40 (forty) is the natural number following 39 and preceding 41. ... 50 (fifty) is the number following 49 and preceding 51. ... 60 (sixty) is the natural number following 59 and preceding 61. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ... Cardinal 70 seventy Ordinal 70th seventieth Factorization $2 cdot 5 cdot 7$ Divisors 1, 2, 5, 7, 10, 14, 35, 70 Roman numeral LXX Roman numeral (Unicode) LXX, lxx Binary 1000110 Octal 106 Duodecimal 5A Hexadecimal 46 Hebrew ע (Ayin) Look up seventy in
Wiktionary, the free dictionary.

70 (seventy) is the natural number following 69 and preceding 71. 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. ... Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc. ... In mathematics, factorization or factoring is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original. ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... 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 Modern Hebrew language is a Semitic language of the Afro-Asiatic language family. ... Wikipedia does not have an article with this exact name. ... It has been suggested that French Wiktionary be merged into this article or section. ... In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... 69 (sixty-nine) is the natural number following 68 and preceding 70. ... 71 is the natural number following 70 and preceding 72. ...

## Contents

70 is a Pell number and a Harshad number. Its factorization makes it a sphenic number. It is the seventh pentagonal number and the fourth 13-gonal number, as well as the fifth pentatope number. It is the smallest weird number. In mathematics, the Pell numbers and companion Pell numbers (Pell-Lucas numbers) are both sequences of integers. ... A Harshad number, or Niven number, is an integer that is divisible by the sum of its digits in a given number base. ... In mathematics, factorization or factoring is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original. ... A sphenic number is a positive integer that is the product of three distinct prime factors. ... A pentagonal number is a figurate number that represents a pentagon. ... 13 (thirteen) is the natural number following 12 and preceding 14. ... In mathematics, a polygonal number is a number that can be arranged as a regular polygon. ... A pentatope number is a number in the fifth cell of any row of Pascals triangle starting with the 5-term row 1 4 6 4 1 either from left to right or from right to left. ... The term weird number also refers to a phenomenon in twos complement arithmetic. ...

## In science

It has been suggested that List of elements by atomic number be merged into this article or section. ... Yb redirects here; for the unit of information see Yottabit General Name, Symbol, Number ytterbium, Yb, 70 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 173. ...

### 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. ... M70 can refer to: Globular Cluster M70 BMW M70, a BMW piston engine This is a disambiguation page &#8212; a navigational aid which lists other pages that might otherwise share the same title. ... 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. ... 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. ... This article or section does not cite its references or sources. ... For other uses, see Sagittarius. ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... A spiral galaxy is a type of galaxy in the Hubble sequence which is characterized by the following physical properties: Spiral Galaxy M74 presents a face-on view of its spiral arms. ... Andromeda (IPA: ) 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. ... September 5 is the 248th day of the year (249th in leap years). ... Events November 2 - Donus becomes Pope. ... February 19 is the 50th day of the year in the Gregorian Calendar. ... A lunar eclipse occurs whenever the Moon passes through some portion of the Earths shadow. ... June 13 is the 164th day of the year in the Gregorian calendar (165th in leap years), with 201 days remaining. ... Events Telets succeeds Vinekh as king of Bulgaria. ... July 21 is the 202nd day (203rd in leap years) of the year in the Gregorian Calendar, with 163 days remaining. ...

## In other fields

70 is: Image File history File links Joe Hundred counts up to 70, by tens. ... Image File history File links Joe Hundred counts up to 70, by tens. ... Sesame Street is an American educational childrens television series for preschoolers and is a pioneer of the contemporary educational television standard, combining both education and entertainment. ... Joe Hundred Guy counts to 70 in 10s, but gets stuck. ... Results from FactBites:

 Upto11.net - Wikipedia Article for 70 (number) (238 words) 70 is a Pell number and a Harshad number. It is the seventh pentagonal number and the fourth 13-gonal number. The Saros number of the solar eclipse series which began on -821 September 5 and ended on 676 February 19.
 Number and Operations Session 1: What Is a Number System? (505 words) Stated simply, a number system is a set of objects (often numbers), operations, and the rules governing those operations. Before we begin to analyze the real number system, we will first examine a finite number system -- its elements (which, unlike the real number system, are limited in number), its operations, and the rules that govern it. Pick two numbers, one from the top horizontal row and the other from the vertical column on the far left, and add them.
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