primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97] for i in range(100, 105_000): if i % 1000 == 0: print(f"status {i} len({len(primes)})", end="\r") for j in primes: if i % j == 0: break else: primes.append(i)