#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);

int ds[2000000+1];

void init() {
  REP (i, 2000000+1) ds[i] = i;
  for (int i = 2; i <= 2000000; i++) {
    if (ds[i] != i) continue;
    for (int j = i; j <= 2000000; j += i)
      ds[j] = i;
  }
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  init();
  
  int n, k;
  cin >> n >> k;

  int ret = 0;
  for (int i = 2; i <= n; i++) {
    int t = i;
    int d = 0;
    while (t > 1) {
      ++d;
      int tt = ds[t];
      while (t % tt == 0)
        t /= tt;
    }
    if (d >= k)
      ++ret;
  }
  cout << ret << endl;
  
  return 0;
}