import random
from math import gcd

def main():
    n = int(input())
    
    while True:
        p = random.randint(1, n - 1);
        if p % 2 == 0 or gcd(n, p) != 1:
            continue
        print("? {}".format(p), flush=True)
        r = int(input())
        if r % 2 == 1:
            continue
        r >>= 1
        hoge = modpow(p, r, n)
        if hoge == 1 or hoge == n - 1:
            continue
        p = gcd(hoge + 1, n)
        q = gcd(hoge + n - 1, n)
        if p * q == n:
            print("! {} {}".format(p, q), flush=True)
            break

if __name__ == "__main__":
    main()