# Determine if a number is prime


def main():
    """Determine if a number entered by the user is prime or not.

    This is the level 0, simplest algorithm I could think of.
    Divide the number in question by all numbers from 2 to
    that number - 1. [2, num - 1], If none of those numbers
    divide in evenly than num is prime."""
    number = int(input("Please enter a number greater than"
                       + " or equal to 2: "))
    prime = True
    divisor = 2
    while divisor < number and prime:
        prime = number % divisor != 0
        divisor += 1
    if prime:
        print(number, "is prime.")
    else:
        print(number, "is not prime.")
    # OR print(number, " is",
    #      "not" if not prime else "", " prime", sep="")


main()