#include <bits/stdc++.h>
#define int long long
#define double long double
using namespace std;
const int MOD =  1000000007;
const int INF = 1e11;
using Graph = vector<vector<int>>;

signed main(){
  int N, H;
  cin >> N >> H;

  map<int, int> fac;
  for( int i = 2; i <= sqrt(H); i++ ){
    while( H%i == 0 ){
      fac[i]++;
      H /= i;
    }
  }
  if( H > 1 ) fac[H]++;

  map<int, int> sum;
  for( int i = 0; i < N; i++ ){
    int A;
    cin >> A;
    for( int j = 2; j <= sqrt(A); j++ ){
      while( A%j == 0 ){
        sum[j]++;
        A /= j;
      }
    }
    if( A > 1 ) sum[A]++;
  }

  for( auto p : fac ){
    if( sum[p.first] < p.second ){
      cout << "NO" << endl;
      return 0;
    }
  }
  cout << "YES" << endl;

}