Numbers

Prime Numbers is an educational website dedicated to explaining prime numbers and their role in mathematics and computing. Its content introduces the definition and properties of prime numbers, distinguishes prime from composite numbers, and offers practical ways to check whether a given integer is prime. Visitors can explore lists of primes, learn about topics such as twin primes, perfect numbers, greatest common divisors and least common multiples, and check whether particular numbers, ages, or years are prime.

The site also places prime numbers in historical and modern context, from Euclid’s proof that there are infinitely many primes to current records for exceptionally large numbers. It explains how prime factorization relates to public-key cryptography and digital security, including RSA and secure online payments. Additional learning resources cover Mersenne numbers, the Sieve of Eratosthenes, primality testing, and the history of record-setting primes. Designed for a broad audience, Prime Numbers organizes its material into accessible articles and reference lists, provides contact and legal information, and makes content available in multiple languages.