Citizendia
Your Ad Here

71 (seventy-one) is the natural number following 70 and preceding 72. In Mathematics, a natural number (also called counting number) can mean either an element of the set (the positive Integers or an 70 ( seventy) is the Natural number following 69 and preceding 71. 72 ( seventy-two) is the Natural number following 71 and preceding 73.

0 10 20 30 40 50 60 70 80 90 →
Cardinal 71
seventy-one
Ordinal 71st
seventy-first
Factorization prime
Divisors 1, 71
Roman numeral LXXI
Binary 1000111
Hexadecimal 47

Contents

In mathematics

71 is the algebraic degree of Conway's constant, a remarkable number arising in the study of look-and-say sequences. 69 ( sixty-nine) is a number following 68 and preceding 70. In mathematics sixty-nine is the twentieth distinct Biprime 70 ( seventy) is the Natural number following 69 and preceding 71. 72 ( seventy-two) 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 ( seventy-six) 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. This is a list of articles about Numbers ( not about Numerals. The integers (from the Latin integer, literally "untouched" hence "whole" the word entire comes from the same origin but via French "Twenty" redirects here For the village in England, see Twenty Lincolnshire. 30 ( thirty) is the Natural number following 29 and preceding 31. 40 ( forty) is the Natural number following 39 and preceding 41. This article discusses the number fifty. For the year 50 CE see 50. 60 ( sixty) is the Natural number following 59 and preceding 61. 70 ( seventy) is the Natural number following 69 and preceding 71. 80 ( eighty) is the Natural number following 79 and preceding 81. 90 ( ninety) is the Natural number preceded by 89 and followed by 91. This article describes cardinal numbers in mathematics For cardinals in linguistics see Names of numbers in English. In Set theory, an ordinal number, or just ordinal, is the Order type of a Well-ordered set. In Mathematics, factorization ( also factorisation in British English) or factoring is the decomposition of an object (for In Mathematics, a prime number (or a prime) is a Natural number which has exactly two distinct natural number Divisors 1 In Mathematics, a divisor of an Integer n, also called a factor of n, is an integer which evenly divides n without Roman numerals are a Numeral system originating in ancient Rome, 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. In Mathematics and Computer science, hexadecimal (also base -, hexa, or hex) is a Numeral system with a In Mathematics, an algebraic number is a Complex number that is a root of a non-zero Polynomial in one variable with rational (or In Mathematics, the look-and-say sequence is the sequence of integers beginning as follows 1 11 21 1211 111221 312211 13112221 1113213211 In Mathematics, the look-and-say sequence is the sequence of integers beginning as follows 1 11 21 1211 111221 312211 13112221 1113213211

It is the 20th prime number. In Mathematics, a prime number (or a prime) is a Natural number which has exactly two distinct natural number Divisors 1 The next is 73, with which it composes a twin prime. 73 ( seventy-three) is the Natural number following 72 and preceding 74. A twin prime is a Prime number that differs from another prime number by Two. It is also a permutable prime with 17. A permutable prime is a Prime number, which in a given base can have its digits switched to any possible Permutation and still spell a prime number 17 ( seventeen) is the Natural number following 16 and preceding 18. If we add up the primes less than 71 (2 through 67), we get 568, which is divisible by 71, 8 times. 71 is the largest (15th) supersingular prime, which is also a Chen prime. If E is an Elliptic curve defined over the Rational numbers then a prime p is supersingular for E if the reduction A Prime number p is called a Chen prime if p  + 2 is either a prime or a product of two primes. Also, 712 = 7! + 1, making it part of the last known pair of Brown numbers, as (71, 7). Brocard's problem asks to find Integer values of n for which n!+1 = m^2 where n! is the Factorial. It is an Eisenstein prime with no imaginary part and real part of the form 3n − 1. In Mathematics, an Eisenstein prime is an Eisenstein integer z = a + b\\omega\qquad(\omega = e^{2\pi i/3} that is irreducible Since 9! + 1 is divisible by 71 but 71 is not one more than a multiple of 9, 71 is a Pillai prime. A Pillai prime is a Prime number p for which there is an integer n > 0 such that the Factorial of n is one less than a multiple of

As 71 is the least prime factor of the first twenty-two terms of the Euclid-Mullin sequence, it is the twenty-third term. The Euclid-Mullin sequence is an infinite sequence of distinct Prime numbers in which each element is the least Prime factor of one plus the product of all earlier Also, 71 is the largest number which occurs as a prime factor of an order of a sporadic simple group. In the Mathematical field of Group theory, a sporadic group is one of the 26 exceptional groups in the Classification of finite simple groups

71 is a centered heptagonal number. A centered heptagonal number is a centered Figurate number that represents a Heptagon with a dot in the center and all other dots surrounding the center

In science

In astronomy,

Messier object M71, a magnitude 8. See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Lutetium (ljuːˈtiːʃiəm is a Chemical element with the symbol Lu and Atomic number 71 Astronomy (from the Greek words astron (ἄστρον "star" and nomos (νόμος "law" is the scientific study The Messier objects are a set of Astronomical objects first listed by French astronomer Charles Messier in his "Catalogue des Nébuleuses The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value 5 globular cluster in the constellation Sagitta
The New General Catalogue object NGC 71, a magnitude 13. A globular cluster is a spherical collection of Stars that orbits a galactic core as a Satellite. In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture This article is about the constellation for the trigonometric function see Versine. The New General Catalogue ( NGC) is the best-known catalogue of Deep sky objects in Amateur astronomy. 2 peculiar spiral galaxy in the constellation Andromeda
The Saros number of the solar eclipse series which began on -702 October 8 and ended on 777 March 14. A peculiar galaxy is a Galaxy which is unusual in its size shape or composition 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 “The Realm of the Andromeda ( is a Constellation named for the princess Andromeda ( Greek Ανδρομέδη = guardian of the men) a character in Saros or Sáros may refer to Saros cycle, a method for predicting solar eclipses SS Saros, a shipwreck off the southeast coast A solar eclipse occurs when the Moon passes between the Sun and the Earth so that the Sun is wholly or partially obscured Events Europe Charlemagne defeats the Saxons; their leader Widukind flees to Denmark. The duration of Saros series 71 was 1478. 4 years, and it contained 83 solar eclipses.
The Saros number of the lunar eclipse series which began on -472 June 4 and ended on 808 July 11. A lunar eclipse occurs whenever the Moon passes through some portion of the Earth's shadow Events By place China The State of Wu is annexed by the State of Yue. Events By Place Asia The Abbasid capital is moved north from Baghdad to Samarra. The duration of Saros series 71 was 1280. 1 years, and it contained 72 lunar eclipses.

In Judaism

In ancient Israel there was a Sanhedrin headquarters; it had 71 judges who judged cases where the criminal deserved the death penalty. The Sanhedrin (סנהדרין συνέδριον ''synedrion'', "sitting together" hence " assembly " or "council" was an assembly

In other fields

Seventy-one is also:

In sports

In Popular Culture

© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
 Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic