#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_int.hpp>
// #include <atcoder/all>

using boost::multiprecision::cpp_int;
using namespace std;
// using namespace atcoder;

#if __has_include("print.hpp")
  #include "print.hpp"
#endif

#define rep(i, n) for(ll i = 0; i < (ll)(n); i++)
#define ALL(x) (x).begin(), (x).end()
#define RALL(x) (x).rbegin(), (x).rend()
#define MOD 1000000007

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

typedef long long ll;
typedef pair<ll, ll> p;

ll gcd(ll a, ll b)
{
  if(b == 0) return a;
  else return gcd(b, a % b);
  // return (b == 0) ? a : gcd(b, a % b);
}

int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, h;
  cin >> n >> h;
  vector<int> v(n);
  rep(i, n) cin >> v[i];

  rep(i, n){
    h /= gcd(h, v[i]);
  }
  if(h==1) cout << "YES" << endl;
  else cout << "NO" << endl;
}