#include <bits/stdc++.h>
#include <iostream>

using namespace std;
 
typedef long long ll;

typedef long double ld;
typedef unsigned long long ull;
typedef pair<int,int> PII;
typedef pair<ll,ll> PLL;
#define i128 _int128

#define fi first
#define se second 
#define pb push_back

#define jintian return
#define shuawuti 0
#define endl '\n'

const ll INF=1e18;
const ll N=1e9+7;

int n,x,y;

void solve(){
    cin>>n;
    if(n<=5)cout<<"-1"<<endl;
    else{
        if(n%2==0){
            cout<<"2"<<' '<<n-2<<endl;
        }
        else{
            cout<<"3"<<' '<<n-3<<endl;
        }
    }
    
}



int main(){
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    
    int _=1;
    cin>>_;
    
    while(_--)solve();

    jintian shuawuti;
}