def is_prime(num):
    if num < 2:
        return False
    for i in range(2, int(num**0.5) + 1):
        if num % i == 0:
            return False
    return True

def find_primes():
    primes = []
    for num in range(500, 1000):
        if str(num)[0] == '5' and is_prime(num):
            primes.append(num)
    return primes

# Display the prime numbers
result = find_primes()
for prime in result:
    print(prime)