#include<iostream>
#include<vector>
using namespace std;
int N,H;
main()
{
	cin>>N>>H;
	vector<pair<int,int> >T;
	for(int i=2;i*i<=H;i++)
	{
		if(H%i==0)
		{
			T.push_back(make_pair(i,0));
			while(H%i==0)
			{
				T.back().second++;
				H/=i;
			}
		}
	}
	if(H>1)T.push_back(make_pair(H,1));
	for(;N--;)
	{
		int A;cin>>A;
		for(int i=0;i<T.size();i++)
		{
			while(T[i].second>0&&A%T[i].first==0)
			{
				A/=T[i].first;
				T[i].second--;
			}
		}
	}
	for(pair<int,int>p:T)if(p.second>0)
	{
		cout<<"NO"<<endl;
		return 0;
	}
	cout<<"YES"<<endl;
}