#include <algorithm>
#include <iostream>
using namespace std;
int n,k;
int tbl[2000010];
void solve(){
  for(int i=2;i<=n;++i){
    if(!tbl[i]){
      for(int j=1;i*j<=n;++j) tbl[i*j]++;
    }
  }
  int cnt = 0;
  for(int i=2;i<=n;++i) if(tbl[i]>=k) ++cnt;
  cout << cnt << endl;
}
int main(){
  cin >> n >> k;
  solve();
  return 0;
}