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

int main(void) {
	int N, K;
	cin >> N >> K;
	
	vector<int> cnt(N + 1, 0);
	for(int i = 2; i <= N; ++i) if(cnt[i] == 0) for(int j = i; j <= N; j += i) cnt[j] += 1;
	
	int ans = 0;
	for(int i = 2; i <= N; ++i) if(cnt[i] >= K) ans += 1;
	
	cout << ans << "\n";
	
	return 0;
}