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Mathematics 21 Online
OpenStudy (anonymous):

how to find prime number?

OpenStudy (anonymous):

Sieve fo Eratosthenes...for small enough numbers. http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes

OpenStudy (anonymous):

i have made a program for that in the 6.000 MIT OCW course forum..lol

OpenStudy (anonymous):

Try to factor it. If the only factors you come up with is 1 and the number itself then it is prime. Prime numbers must be greater than 1. 2 is the only even prime number.

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