code:

#include<bits/stdc++.h>
#define int long long
using namespace std;
int t;
int n;
signed main()
{
    cin>>t;
    while(t--)
    {
        cin>>n;
        int a[n+10];
        for(int i=0;i<n;i++) cin>>a[i];
        int m=n;
        int flag=0;
        while(m--)
        {
            for(int i=n-1;i>0;i--)
            {
                if(a[i]%a[m]!=0)
                {
                    cout<<"No"<<endl;
                    flag=1;
                    break;
                }
            }
            if(flag==1) break;
            if(flag==0)
            {
                cout<<"Yes"<<endl;
                break;
            }
        }
    }
    return 0;
}