number = int(input('Enter a number: '))
prime = 1
a = '*' * (number-2)
nu = 2
for character in a:
    if number/nu == round(number/nu):
        prime = 0
    else:
        nu = nu + 1
if prime == 1 and number > 1 or number == 2:
    print(number, 'is a prime number')
else:
    print(number, 'is not a prime number')