There is a page named "Prime" on this wiki. See also the other search results found.
 Articles
About 100 results for "Prime"

Aliquot sequence
In mathematics, an aliquot sequence is a sequence of positive integers in which each term is the sum of the proper divisors of the previous term. If the sequence reaches the number 1, it ends 
Square number
In mathematics, a square number or perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. For example, 9 is a 
Centered polygonal number
The centered polygonal numbers are a class of series of figurate numbers, each formed by a central dot, surrounded by polygonal layers with a constant number of sides. Each side of a polygonal layer contains 
Perfect number
In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself (also known 
Factorial base
systems}} In combinatorics, the factorial number system, also called factoradic, is a mixed radix numeral system adapted to numbering permutations. It is also called factorial base, although factorials do not function as base, but as 
Digital root
The digital root (also repeated digital sum) of a nonnegative integer is the (single digit) value obtained by an iterative process of summing digits, on each iteration using the result from the previous iteration 
Happy number
A happy number is defined by the following process: Starting with any positive integer, replace the number by the sum of the squares of its digits in base 10, and repeat the process until the 
Fractions and Irrational Numbers
Dozenal fractions are written on the same principle as decimal fractions, but the fact that they cover the most important fractions in use  including thirds, which in decimal exhibit infinitely recurring digits  means they are 
1001
1001 is the famous HardyRamanujan number. 1001 is the first fourdigit palindromic number, it is also the third Carmichael number, it is also the smallest number expressible as the sum of two cubes 
Aurifeuillean factorization
In number theory, an aurifeuillean factorization, or aurifeuillian factorization, named after LÃ©onFranÃ§oisAntoine Aurifeuille, is a special type of algebraic factorization that comes from nontrivial factorizations of cyclotomic polynomials over the integers. Although 
Dozadic number
introduction to dozadic numbers. The dozadic numbers are generally not used in mathematics: since 10 is not prime or prime power, the dozadics are not a field. More formal constructions and properties are given below. 
Sierpinski/Riesel bases with 2cover
A Sierpinski/Riesel base b has 2cover if and only if b+1 is divisible by at least two distinct odd primes, such bases b are If b+1 is divisible by two distinct 
List of mathematical constants
Most of these numbers above are conjectured to be irrational, transcendental and normal, but all have no proof except the numbers with these notes (e.g., e,, and are transcendental, and of course and golden 
Sierpinski and Riesel conjectures with bases b le 720 with le 3 k remain
multiple of base (b) and where k+1 (Sierpinski) or kâˆ’1 (Riesel) is composite are included in the conjectures but excluded from testing. Such kvalues will have the same prime as k/ b. 
4
All numbers â‰¤4 divide 10 (the base of the numeral system of this wiki), but 5 does not. (note that 10 is the smallest such number) All numbers â‰¤4 satisfy the property that general polynomial 
Why dozenal is the best base
By these two considerations more or less speak for themselves; for purposes of this brief article, I will suggest that the smallest reasonable base size is 6, and the highest is 16. Dozenal (base 10 
Nontotient
In number theory, a nontotient is a positive integer n which is not a totient number: it is not in the range of Euler's totient function Ï†, that is, the equation Ï†(x)= n 
Fibonacci number
The first 100 Fibonacci numbers are shown in this table below. F(n) is (probable) prime for n= 3, 4, 5, 7, E, 11, 15, 1E, 25, 37, 3E, 6E, XE, E5, 25E, 2EE, 301 
Self number
A self number, Colombian number or Devlali number is an integer that cannot be written as the sum of any other integer n and the individual digits of n. This property is specific to the 
Cyclotomic polynomial
and i is the imaginary unit. All cyclotomic polyominoes are irreducible, thus if Bunyakosky conjecture is true, then for any given integer n â‰¥ 1, there are infinitely many integers x â‰¥ 2 such that is prime.' 
Regular number
of a power of 10. Thus, they are regular numbers. Equivalently, they are the numbers whose only prime divisors are 2 and 3. Formally, a regular number is an integer of the form 2Â·3 
Perfect power
A perfect power is an integer n which is expressible as for integers x and y and y 1. The perfect powers up to 10000 are 
Untouchable number
An untouchable number is a positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself). That is, these numbers are not in 
Amicable number
Amicable numbers are two different numbers related in such a way that the sum of the proper divisors of each is equal to the other number. The smallest pair of amicable numbers is (164, 1E8 
Friedman number
A Friedman number is an integer, which is the result of an expression using all its own digits in combination with any of the four basic arithmetic operators (+, âˆ’, Ã—, Ã·), additive inverses, parentheses, and exponentiation. For example
Related Community
Anomaly Research Centre
tv
1K
Pages7K
Images10
Videos
The Anomaly Research Centre is an evergrowing online encyclopedia dedicated to the British television series "Primeval" and its recent Canadian spinoff series "Primeval: New World". The basic premise of the show is that fourthdimensional rifts in space and time…