Check if a number is prime using Python

def is_prime(x): if x < 2: return False elif x == 2: return True else: for n in range(2, x): print n if x % n == 0: return False else: return True
A prime number is a positive integer greater than 1 that has no positive divisors other than 1 and itself. (Boy, that's a mouthful.)

In other words, if you want to test if a number in a variable x is prime, then no other number should go into x evenly besides 1 and x. So 2 and 5 and 11 are all prime, but 4 and 18 and 21 are not.

If there is a number between 1 and x that goes in evenly, then x is not prime.

Function written using Python.

#python #prime #function


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