#include <bits/stdc++.h>
#define int long long
#define double long double
using namespace std;
const int MOD =  1000000007;
const int INF = 1e11;
using Graph = vector<vector<int>>;

signed main(){
  int N, H;
  cin >> N >> H;

  vector<int> Prime;
  vector<bool> fg(100000001, true);
  for( int i = 2; i <= sqrt(100000000); i++ ){
    if( fg[i] ){
      for( int j = 2; i*j <= 100000000; j++ ) fg[i*j] = 0;
    }
  }

  for( int i = 2; i <= 100000000; i++ ){
    if( fg[i] ) Prime.emplace_back(i);
  }

}