N = 100000 prime = [False, True] * (N // 2) primes = [] for i in range(3, N, 2): if prime[i]: primes.append(i) k = i ** 2 while k <

N = 100000 prime = [False, True] * (N // 2) primes = [] for i in range(3, N, 2): if prime[i]: primes.append(i) k = i ** 2 while k < N: prime[k] = False k += i * 2 useful = [ str(i) for i in primes ] # Enter your clues for i in useful: if i[0] == '6' and ('3' in i) and len(str(i)) == 5: print(i)