Prime Number Program

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Your question is Prime Number Program. Start with the requirements on the right.

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Problem

Write a function that determines whether a given integer is prime. A prime number is an integer greater than 1 that has exactly two positive divisors: 1 and itself.

Formal Specification

Implement is_prime(n) where n is an integer. Return True if n is prime, otherwise return False.

Constraints

-10^9 <= n <= 10^9
Return False for any n <= 1
The solution should be more efficient than checking every number from 2 to n-1

Function Signature

def is_prime(n):

Your solutionPython 3

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