#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD 1000007
#define INF 100000000
using namespace std;
typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;

int a[2020202];

int main() {
	int n, k;
	cin >> n >> k;
	for (LL i = 2; i <= n; ++i) {
		if (!a[i]) {
			for (LL j = i; j <= n; j += i) {
				a[j]++;
			}
		}
	}
	int ans = 0;
	for (LL i = 2; i <= n; ++i) {
		if (a[i] >= k) ans++;
	}
	cout << ans << endl;
	return 0;
}