def is_prime(number): #Function to check a number is a prime number or not
    if(number > 1):
        for i in range(2,number):
            if (number % i) == 0:
                return False
        return True

finish = False
number = 100
while (finish == False): # A loop to cover all numbers from 100 to 1000.
    if (number // 100) == 5:
        prime = is_prime(number)
        if prime:
            print(number)

    number += 1
    if number == 1000:
         finish = True