#include <bits/stdc++.h>
using namespace std;
#define x first
#define y second
#define endl '\n'
#define int long long
typedef long double f128;
typedef long long i64;
typedef unsigned long long u64;
typedef pair<int, int> PII;
const int INF = 0x3f3f3f3f, mod = 1e9 + 7;
const i64 inf = 2e18;
//-------------------------------------------
void solve()
{
  int l, r;
  cin >> l >> r;
  int L = 2, R = r;
  while (R > L)
  {
    int mid = L + R >> 1;
    //cerr << L << " " << R << " " << (r / mid) << " " << ((l + mid - 2) / (mid - 1)) << endl;
    if ((r / mid) >= (l / (mid - 1)))
      R = mid;
    else
      L = mid + 1;
  }
  cout << r / L << endl;
}
signed main()
{
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
  int T = 1;
  cin >> T;
  for (int i = 1; i <= T; i++)
    solve();
  return 0;
}