#include <iostream>
#include <cmath>
#include <cstdio>
#include <algorithm>
#include <string>
#include <vector>
#include <queue>
#include <string.h>
#include <map>
#include <fstream>
#include <functional>
#include <bitset>
#include <iomanip>
#include <stack>
#include <set>
#include <climits>
#define MAX_N 1000100
#define PI 3.141592653589
#define EPS 1e-20
#define BS 10
#define MOD 1000000009 
#define ZERO 10001
#define YJSNPI 8101919
#define INF (1 << 28)
#define ADD(a, b) a = (a + (ll)b) % MOD
#define MUL(a, b) a = (a * (ll)b) % MOD
#define MAX(a, b) a = max(a, b)
#define MIN(a, b) a = min(a, b)


using namespace std;

typedef pair<int, int> pi;
typedef pair<pi, pi> ppi;

int N, K;
int cnt[2000010];

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