#include <bits/stdc++.h>
using namespace std;

int main() {
  int N, K;
  cin >> N >> K;
  vector<int> V(N + 1);
  for (int i = 2; i <= N; i++) {
    if (V.at(i)) continue;
    for (int j = i; j <= N; j += i) {
      V.at(j)++;
    }
  }
  int ans = 0;
  for (auto v : V) if (v >= K) ans++;
  cout << ans << "\n";
}