#include <bits/stdc++.h>

using namespace std;

#define vc vector
#define pii pair <int, int>
#define int long long

const int inf = 1e9;


template<class T>
bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    vector<bool> a(1e6 +5 );
    set<int> caluga;
    for (int i = 2; i < a.size(); ++i) {
        if (a[i]) continue;
        caluga.insert(i);
        for (int j = i * 2; j < a.size(); j += i) {
            a[j] = true;
        }
    }
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        if (n <= 4) {
            cout << "-1\n";
            continue;
        }
        if (n % 2 == 0) {
            cout << 2 << ' ' << n - 2 << '\n';
            continue;
        }
        if (n - 3 > 2) {
            cout << 3 << ' ' << n - 3 << '\n';
            continue;
        }
        cout << "-1\n";
    }
}