Prime number

In mathematics, a prime number (or prime) is a natural number greater than one whose only positive divisors are one and itself. Or for short: A prime number is a natural number with exactly two natural divisors. A natural number that is greater than one and is not a prime is called a composite number. The numbers zero and one are neither prime nor composite. The property of being a prime is called primality. Prime numbers are of fundamental importance in number theory.

External links

• Prime curios at the prime pages
• The prime pages -- http://www.utm.edu/research/primes/
• MacTutor history of prime numbers
• Online Prime Number calculator
• The "PRIMES is in P" FAQ
• The first 20,000 primes (through 224737) at Wikisource
• List of largest known probable primes
• The prime puzzles
• The Prime Project generates a new prime number every time the page is loaded
• An English translation of Euclid's proof that there are infinitely many primes
• Primes from WIMS is an online prime generator.
• Prime Factorization Worksheet generates new questions every time the page is loaded
• Prime Spiral pattern
• 12 digit primes Known 12-digit prime factors of Googolplex - 1
• An Introduction to Analytic Number Theory, by Ilan Vardi and Cyril Banderier
• Factorizer Windows software to find prime numbers and pairs of prime numbers less than 2,147,483,646.