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

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);

    ll n,h; cin>>n>>h;
    while(n--){
        ll a; cin>>a;
        ll g = __gcd(a,h);
        h /= g;
    }
    if(h==1) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}