#include<iostream>
#include<string>
#include<math.h>
using namespace std;

/*int sosu(long long N){
	long long A;
	int J = 0;
	for (long long i1 = 2; i1 < N/2; i1++){
		A = (N / i1)*i1;
		if (A == N){
			J = 1;
			break;
		}
	}
	return J;

}*/

int main(){
	long long n;
	long long a;
	int k;
	int cnt = 0;
	int cnt1 = 0;
	int ans = 0;
	cin >> n >> k;

	for (long long i1 = 2; i1 < n+1; i1++){
		a = i1;
		for (long long i = 2; i < sqrt(n); i++){
			while (a%i == 0){
				a /= i;
				cnt++;
			}
			if (cnt>0){
				cnt1++;
				cnt = 0;
			}
		}
		if (a != 1) cnt1++;
		if (cnt1 >= k) ans++;
		cnt1 = 0;
	}
	if (k > 0){
		cout << ans << endl;
	}
	else{
		cout << ans + 1 << endl;
	}
	

	return 0;
}