#include <bits/stdc++.h>
#define fastIO (cin.tie(0), cout.tie(0), ios::sync_with_stdio(false))
using namespace std;

vector<int> divEnumeration(int num) {
  vector<int> res;
  if (num == 1) {
    res.emplace_back(1);
    return res;
  }

  int mod = 2;
  while (mod * mod <= num) {
    if (num % mod == 0) {
      res.emplace_back(mod);
      num /= mod;
    } else {
      if (mod == 2) {
        mod++;
      } else {
        mod += 2;
      }
    }
  }

  res.emplace_back(num);
  return res;
}

int main() {
  fastIO;
  int n, h;
  cin >> n >> h;

  map<int, int> mp;
  for (const auto mod : divEnumeration(h)) {
    if (mp.find(mod) != mp.end()) {
      mp[mod] += 1;
    } else {
      mp[mod] = 1;
    }
  }

  for (int i = 0, num; i < n; ++i) {
    cin >> num;
    for (const auto mod : divEnumeration(num)) {
      if (mp.find(mod) != mp.end()) {
        mp[mod]--;
      }
    }
  }

  bool isDivide = true;
  for (const auto m : mp) {
    if (m.second > 0) {
      isDivide = false;
    }
  }

  if (isDivide)
    cout << "YES" << '\n';
  else
    cout << "NO" << '\n';

  return 0;
}