#include <bits/stdc++.h> 

using namespace std;

map <int, int> res;

int main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    int n, t;

    cin >> t;

    while (t--)
    {
        cin >> n;
        while (1)
        {
            if (n % 2 != 0) break;
            n /= 2;
        }
        while (1)
        {
            if (n % 5 != 0) break;
            n /= 5;
        }

        if (n == 1)
        {
            cout << 1 << '\n';
        }
        else
        {
            if (res.find(n) == res.end())
            {
                int val = 1;
                for (int i = 1; ; i++)
                {
                    val *= 10;
                    val %= n;
                    if (val == 1)
                    {
                        res[n] = i;
                        break;
                    }
                }
                cout << res[n] << '\n';
            }
            else
            {
                cout << res[n] << '\n';
            }
        }
    }
    return 0;
}