#include "bits/stdc++.h"

#define int long long
using namespace std;

vector<int> eratosfen() {
    int n = 168841;
    vector<bool> res(n + 1, false);
    for (int i = 2; i <= n; ++i) {
        if (!res[i]) {
            for (int j = i * i; j < n; j += i) {
                res[j] = true;
            }
        }
    }
    vector<int> res2;
    for (int i = 2; i < res.size(); ++i) {
        if (!res[i]) {
            res2.push_back(i);
        }
    }
    return res2;
}

signed main() {
    int t;
    cin >> t;
    vector<int> a = eratosfen();
    while (t--) {
        int n;
        cin >> n;
        if (n == 1) {
            cout << 2;
            continue;
        }
        cout << a[n - 1] << endl;
    }
}

you should count the eratosphen for a larger n in your function