import math

n = int(input())

a_list = [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, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271]

for a in a_list:
    if (n % a == 0):
        print("!", a, n // a)
        exit(0)

    print("?", a)

    r = int(input())
    if r % 2 == 1:
        continue

    pow_a = pow(a, r // 2, mod=n)
    if pow_a == 1:
        continue

    p = math.gcd(pow_a + 1, n)
    q = math.gcd(pow_a - 1, n)

    if p * q == n:
        print("!", p, q)
        break