#include <iostream>
#include <cstdint>

using namespace std;

int pf(int a) {
  int count = 0;
  if (a == 2) return 1;
  if (a == 3) return 1;
  for (int i = 2; i <= a; i++) {
    if (a % i == 0) {
      count++;
      while (a % i == 0) {
        a /= i;
      }
    }
  }
  return count;
}

int main() {

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

  int n, k;
  cin >> n >> k;

  int ans = 0;
  for (int i = 2; i <= n; i++) {
    if (pf(i) >= k) {
      ans++;
    }
  }
  cout << ans << endl;
}