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