#include <bits/stdc++.h>
using namespace std;
int main(){
  int N, H;
  cin >> N >> H;
  vector<int> A(N);
  for (int i = 0; i < N; i++){
    cin >> A[i];
  }
  for (int i = 0; i < N; i++){
    H /= gcd(H, A[i]);
  }
  if (H == 1){
    cout << "YES" << endl;
  } else {
    cout << "NO" << endl;
  }
}