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]

ord_max = 0
a_max = -1

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

    print("?", a)

    r = int(input())

    if ord_max < r:
        ord_max = r
        a_max = a

pow_a = pow(a_max, ord_max // 2, mod=n)

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

print("!", p, q)