import sys
import random
import math
n=int(input())
a=1
while True:
  a+=1
  if math.gcd(a, n)!=1:
    continue
  print("? %d" % a)
  sys.stdout.flush()
  r=int(input())
  if r%2==1:
    continue
  x=pow(a, r//2, n)
  if x==n-1:
    continue
  p=math.gcd(x+1, n)
  q=n//p
  print("! %d %d" % (p, q))
  sys.stdout.flush()
  sys.exit()