#include<bits/stdc++.h>
#define ll long long
#define db long double
#define mk make_pair
#define eb emplace_back 
#define fo(i,a,b) for(ll (i)=(a);(i)<=(b);(i)++)
#define fd(i,a,b) for(ll (i)=(a);(i)>=(b);(i)--)
using namespace std;
const int N=1e5+10;
ll n;
void solve(){
    cin>>n;
    if(n<6)cout<<"-1\n";
    else if(n%2)cout<<3<<" "<<n-3<<"\n";
    else cout<<2<<" "<<n-2<<"\n";
}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0),cout.tie(0);
    int T=1;
    cin>>T;
    while(T--) solve();
    return 0;
}