#include<iostream>
using namespace std;
int main()
{
    int m,n;
    cin>>m;
    while(cin>>n){
        if(n==6||n==28||n==496||n==8128||n==33550336)cout<<n<<" is perfect"<<endl;
        else cout<<n<<" is not perfect"<<endl;
    }
    return 0;
}