#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
using ll = long long;

ll gcd(ll a, ll b) {
    if (b==0) return a;
    return gcd(b, a%b);
}

int main() {
    int n;
    ll h;
    cin >> n >> h;
    for(int i=0; i<n; ++i) {
        ll a; cin >> a;
        h /= gcd(abs(a), h);
    }
    if (h==1) cout << "YES\n";
    else cout << "NO\n";
}