#include<bits/stdc++.h>

using namespace std;

#define fast ios::sync_with_stdio(NULL); cin.tie(0); cout.tie(0);

typedef long long ll;

const ll N = 100111, MOD = 1e9 + 7;

ll t, n, a;

int main()
{
    fast
    cin >> t; 
    while(t--)
    {
        cin >> n >> a; 
        for(ll b = n; b > max(n - 2000, 1ll); b--)
        {
            ll g = __gcd(a, b);
            if(g == 1)
            {
                cout << b << endl; 
                break;
            }
        }
    }
}