What is Prime Number:
Prime number are positive natural number greater than 1 (N > 1) that has only two divisors i.e. 1 and itself. In other words, a prime number is a number that cannot be formed by multiplying two smaller natural numbers (except 1 and itself). For example, 2, 3, 5, 7, 11, and 13 are prime numbers.
Example 1:
def is_prime(num): if num <= 1: return False for i in range(2, int(num**0.5) + 1): if num % i == 0: return False return True # Number to be check num = 17 if is_prime(num): print(f"{num} is a prime number.") else: print(f"{num} is not a prime number.")
Output:
17 is a prime number.
Example 2
def is_prime(num): if num <= 1: return False divisor = 2 while divisor * divisor <= num: if num % divisor == 0: return False divisor += 1 return True # Number to be check num = 17 if is_prime(num): print(f"{num} is a prime number.") else: print(f"{num} is not a prime number.")
Output:
17 is a prime number