#include <bits/stdc++.h>

using namespace std;

using i64 = long long;
using i128 = __int128;
using ull = unsigned long long;
#define pll pair<ll, ll>
#define pii pair<int, int>
#define vi vector<int>
#define fir(i, a, b) for (int i = a; i <= b; i++)
#define pqi priority_queue<int> // 优先队列

#define all(x) x.begin(), x.end()
#define pb push_back
#define mp make_pair
#define fi first
#define se second

void solve()
{
    int n;
    std::cin >> n;

    if (n < 6)
    {
        std::cout << -1 << "\n";
        return;
    }

    if (n % 2 == 0)
    {
        std::cout << 2 << " " << n - 2 << "\n";
    }
    else
    {
        std::cout << 3 << " " << n - 3 << "\n";
    }
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t;
    std::cin >> t;
    while (t--)
    {
        solve();
    }
    return 0;
}