#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)

//nの約数を列挙
vector<ll> enum_div(ll n){
	vector<ll> ret;
	for(ll i=1 ; i*i<=n ; ++i)	{
		if(n%i == 0){
			ret.push_back(i);
			if(i!=1 && i*i!=n){
				ret.push_back(n/i);
			}
		}
	}
	return ret;
}
int main(){
  ll n,h;
  cin>>n>>h;
  vector<ll> x = enum_div(h);
  int m=x.size();
  vector<bool>check(m,false);
  rep(i,n){
    ll a;
    cin>>a;
    rep(j,m){
      if(a%x[j]==0)check[j]=true;
    }
  }
  bool hantei=true;
  rep(j,m){
    if(check[j]==false){
      hantei=false;
      break;
    }
  }
  if(hantei)cout<<"YES"<<endl;
  else cout<<"NO"<<endl;
  return 0;
}