import static java.math.BigInteger.*;
import java.math.*;
import java.util.*;

class Main{
	static boolean end(BigInteger r){
		var gcd=r.gcd(n);
		if(gcd.equals(n)||gcd.equals(ONE))
			return false;
		System.out.println("! "+gcd+" "+n.divide(gcd));
		return true;
	}

	static BigInteger n;

	public static void main(String[] $){
		var s=new Scanner(System.in);
		n=s.nextBigInteger();

		for(int i=2;!end(valueOf(i));++i){
			System.out.println("? "+i);
			var r=s.nextBigInteger().divideAndRemainder(TWO);
			if(r[1].equals(ZERO)){
				var R=valueOf(i).modPow(r[0],n);
				if(end(R.add(ONE)))
					break;
				if(end(R.subtract(ONE)))
					break;
			}
		}
	}
}