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#include <iostream>
#include <bits/stdc++.h>
using namespace std;
const int N = 100000;
vector<int> primes;
int p[N] = {0};
// wrong
void sieve()
{
for (int i = 2; i <= N; i++)
{
if (p[i] == 0)
{
primes.push_back(i);
for (int j = i; j <= N; j += i)
{
p[j] = 1;//not prime
}
}
}
}
int main()
{
sieve(); // build this sieve once for all
int t;
cin >> t;
while (t--)
{
int m, n;
cin >> m, n;
bool segment[n - m + 1]; // this line is causing segmentation fault . why?
// cout << "error" << endl;
for (int i = 0; i < n - m + 1; i++)
{
segment[i] = 0;
}
for (auto x : primes)
{
// stop the loop if the remaining numbers are not needed
if (x * x > n)
{
break;
}
int start = (m / x) * x;
if (x >= m && x <= n)
{
start = 2 * x;
}
// mark all the multiples of x in range from start to n as not primes
for (int i = start; i <= n; i += x)
{
segment[i - m] = 1;
}
}
// print primes from m...n
for (int i = m; i <= n; i++)
{
if (segment[i - m] == 0 )
{
cout << i << endl;
}
}
cout << endl;
}
return 0;
}
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