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]

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

    print("?", a)

    r = int(input())

    if r % 2 == 1:
        continue

    pow_a = pow(a, r // 2, mod=n)

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

    print("!", p, q)
    break