#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  int n, h;
  cin >> n >> h;
  vector<int> a(n);
  rep(i, n) cin >> a[i];
  map<int, int> mp;
  for (int x : a) {
    for (int i = 2; i * i <= x; i++) {
      if (x % i == 0) {
        mp[i]++;
        while (x % i == 0) x /= i, mp[i]++;
      }
    }
    if (x != 1) mp[x]++;
  }
  for (int i = 2; i * i <= h; i++) {
    if (h % i == 0) {
      if (mp[i] == 0) {
        cout << "NO" << endl;
        return 0;
      }
      while (h % i == 0) h /= i, mp[i]--;
    }
  }
  if (h != 1 && mp[h] == 0) {
    cout << "NO" << endl;
  }
  else {
    cout << "YES" << endl;
  }
  return 0;
}