#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N, H;
	cin >> N >> H;
	for( int i = 0; i < N; i++ ) {
		int A;
		cin >> A;
		int gcd = __gcd( A, H );
		H /= gcd;
	}
	string ans = "NO";
	if( H == 1 ) ans = "YES";

	cout << ans << endl;
}