#include <iostream>
#include <cstdint>
#include <vector>

using namespace std;

int main() {

  ios::sync_with_stdio(false);
  cin.tie(0);

  int n, k;
  cin >> n >> k;
  vector<int> v(n+1);
  for (int i = 2; i <= n; i++) {
    if (v.at(i) == 0) {
      for (int j = i; j <= n; j += i) {
        v.at(j)++;
      }
    }
  }
  int ans{};
  for (int i = 2; i <= n; i++) {
    if (v.at(i) >= k) {
      ans++;
    }
  }
  cout << ans << endl;
}