This is a list of articles about prime numbers. A prime number (or prime) is a natural number greater than 1 that has no divisors other than 1 and itself. By Euclid's theorem, there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes. The first 1,000 primes are listed below, followed by lists of notable types of prime numbers ...
Primes such that the sum of digits is a prime. Learn more about Additive primes First 20: 2, 3, 5, 7, 11, 23, 29, 41, 43, 47, 61, 67, 83, 89, 101, 113, 131, 137, 139 ...
These primes are a subset of the Mersenne numbers, Mn. The numbers are named for the French theologian and mathematician Marin Mersenne, who asserted in the preface of Cogitata Physica-Mathematica (1644) that, for n ≤ 257, Mn is a prime number only for 2, 3, 5, 7, 13, 17, 19, 31, 67, 127, and 257.
A prime number is a natural number greater than 1 that has exactly two positive divisors: 1 and itself. Numbers that have more than two divisors are called composite numbers The number 1 is neither a prime nor a composite. All primes are odd, except for 2.