import java.util.*;
import java.io.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		PrintWriter ou = new PrintWriter(System.out);
		int n = Integer.parseInt(sc.next());
		int h = Integer.parseInt(sc.next());
		for(int i = 0 ; h != 1 && i < n ; i++){
			int a = Integer.parseInt(sc.next());
			int p = a , q = h , z = p % q;
			while(z != 0){
				p = q;
				q = z;
				z = p % q;
			}
			h /= q;
		}
		if(h == 1) ou.println("YES");
		else ou.println("NO");
		ou.flush();
		sc.close();
	}
}