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

#define MAX 2000002

int dp[MAX];

int main(){
	int N, K;
	cin >> N >> K;
	int ans = 0;
	for (int i = 2; i <= N; i++)
	{
		if (dp[i] == 0){
			for (int j = i + i; j <= N; j += i)
			{
				dp[j]++;
			}
		}
		if (!dp[i]) dp[i]++;
		if (dp[i] >= K) ans++;
	}
	cout << ans << endl;
}