import math

n = int(input())

for a in range[2, 1000]:
    g = math.gcd(a, n)
    if g > 1:
        print("!", g, n // g)
        exit(0)

    print("?", a)

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

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

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

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