Prime Number Checker

Challenge Difficulty: Easy | Estimated completion time: ~10 minutes

Develop a small program that checks whether a number entered by the user is a prime number or not.

This is a very simple program for beginners!

If you have experience be creative with it or try it with a new language.

Solution

Python

def is_prime(number: int) -> bool: """Check if a number is prime. Args: number: Number to check Returns: True if the number is prime, False otherwise """ if number < 2: return False if number <span class="text-highlight"> 2: return True if number % 2 </span> 0: return False for divisor in range(3, int(number ** 0.5) + 1, 2): if number % divisor <span class="text-highlight"> 0: return False return True if __name__ </span> "__main__": test_numbers = [2, 3, 4, 17, 20, 29, 100, 97] for number in test_numbers: result = "is prime" if is_prime(number) else "is not prime" print(f"{number} {result}")

Output