/* -*- coding: utf-8 -*-
 *
 * 1250.cc:  No.1250 汝は倍数なりや? - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

/* global variables */

/* subroutines */

template <typename T>
T gcd(T m, T n) {  // m > 0, n > 0
  if (m < n) swap(m, n);
  while (n > 0) {
    T r = m % n;
    m = n;
    n = r;
  }
  return m;
}

/* main */

int main() {
  int n, h;
  scanf("%d%d", &n, &h);

  for (int i = 0; h > 1 && i < n; i++) {
    int ai;
    scanf("%d", &ai);

    int g = gcd<int>(h, ai);
    h /= g;
  }

  if (h == 1) puts("YES");
  else puts("NO");
  return 0;
}