import random
import sys
from math import gcd

input = sys.stdin.readline
done = set()
n = int(input())
p, q = 1, 1
while True:
    x = random.randint(1, n-1)
    if x in done:
        continue
    done.add(x)
    if gcd(x, n) > 1:
        print(f'! {p} {q}')
        exit(0)

    print(f'? {x}')
    r = int(input())
    if r % 2:
        continue
    if pow(x, r//2, n) == n-1:
        continue

    p1, p2 = gcd(pow(x, r//2, n)+1, n), gcd(pow(x, r//2, n)-1, n)
    q1, q2 = n//p1, n//p2
    if p1*q1 == n:
        print(f'! {p1} {q1}')
        break
    elif p2*q2 == n:
        print(f'! {p1} {q1}')
        break