#define _USE_MATH_DEFINES
#include  <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include <stdlib.h>
#include<stdio.h>
#include <queue>
#include<map>
#include <fstream>
#include <sstream>
#include<set>
#include<stack>
#include<time.h>
#include <sys/types.h>
#include <tuple>
#include <numeric>
#include <iterator>
#include <atcoder/all>
#include <bits/stdc++.h>

#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace atcoder;
using namespace std;
typedef long long int ll;
typedef modint998244353 mint;




ll gcd(ll a, ll b) {
    if (a < b)swap(a, b);
    if (b == 0)return a;

    return gcd(b, a % b);
}
int lcm(int a, int b) {
    return a * b / gcd(a, b);
}

/*
解説動画参考
解説ブログ参考
https://sugarknri.hatenablog.com/entry/2016/04/22/191518
*/



int main()
{

   
    int Q;
    Q = 1;
    //cin >> Q;   
    

    
    while (Q--) {
        ll n, k;
        cin >> n >> k;
        
        vector<int>a(n + 10);
        ll s = 0;
        for (int i = 2; i <= n; i++) {
            if (!a[i]) {
                for (int j = i; j <= n; j += i)a[j]++;
            }
            if (a[i] >= k)s ++;
            //cout << a[i] << endl;;
        }
        cout << s;
        
    }

    return 0;
}