import java.util.*;
import java.io.*;
import java.math.*;
// This file is a "Hello, world!" in Java language by OpenJDK for wandbox.

class Main
{
    public static void main(String[] args)
    {
		new Main().run();
    }
	
	void run(){
		Scanner sc=new Scanner(System.in);
		BigInteger N=new BigInteger(sc.next());
		for(int i=2;;++i){
			if(!N.gcd(BigInteger.valueOf(i)).equals(BigInteger.ONE))continue;
			System.out.println("? "+ i);
			BigInteger ord=new BigInteger(sc.next());
			if(ord.mod(BigInteger.TWO).equals(BigInteger.ZERO)) {
				BigInteger b=BigInteger.valueOf(i).modPow(ord.divide(BigInteger.TWO), N);
				b=b.add(BigInteger.ONE);
				BigInteger p=N.gcd(b);
				if(!p.equals(BigInteger.ONE)&&!p.equals(N)) {
					System.out.println("! "+p+" "+N.divide(p));
					return;
				}
			}
		}
	}
	int ord(BigInteger a, BigInteger mod){
		for(int i=1;;++i){
			if(a.modPow(BigInteger.valueOf(i),mod).equals(BigInteger.ONE))return i;
		}
	}
	
	void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}
}

// OpenJDK reference:
//   http://openjdk.java.net/

// Java language references:
//   http://docs.oracle.com/javase