#include<bits/stdc++.h>
using namespace std;

#define rep(i,a,n) for(int i=a;i<=n;i++)
#define per(i,a,n) for(int i=n;i>=a;i--)
#define ll long long
#define pb push_back

#define endl '\n'

const int N=1e5+10;
////////////////

int tt;
int n;


//////////////////




////////////////


///////////////

int main()
{
	ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	
	cin>>tt;
	while(tt--)
	{
		cin>>n;
		if(n<=5)
		{
			cout<<-1;
		}
		else
		{
			cout<<2<<" "<<n-2;
		}
		cout<<endl;
	}
	
	
	
	return 0;
	
}