import java.util.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int h = sc.nextInt();
		while (0 < n-- && h > 1) {
		    h /= getGCD(h, sc.nextInt());
		    
		}
		if (h == 1) {
		    System.out.println("YES");
		} else {
		    System.out.println("NO");
		}
	}
	
	static int getGCD(int x, int y) {
	    if (x % y == 0) {
	        return y;
	    } else {
	        return getGCD(y, x % y);
	    }
	}
}