Python Program - Check Prime Number

Here's a Python program to check if a given number is a prime number or not:

# function to check if a number is prime
def is_prime(n):
    # prime numbers are greater than 1
    if n <= 1:
        return False

    # check for factors from 2 to n-1
    for i in range(2, n):
        if n % i == 0:
            return False

    # if no factors found, the number is prime
    return True

# get user input
num = int(input("Enter a number: "))

# check if the number is prime
if is_prime(num):
    print(num, "is a prime number")
else:
    print(num, "is not a prime number")

The program first defines a function is_prime that takes an integer n as input and returns True if the number is prime and False otherwise. The function checks if the number is greater than 1, and then checks for factors from 2 to n-1. If any factors are found, the number is not prime and the function returns False. If no factors are found, the number is prime and the function returns True.

The program then prompts the user to enter a number, and checks if the number is prime using the is_prime function. The program prints whether the number is prime or not.