#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <string>
#include <vector>
#include <algorithm>
#include <cmath>
#include <sstream>
#include <utility>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pii;
#define all(c) (c).begin(), (c).end()
#define loop(i,a,b) for(ll i=a; i<ll(b); i++)
#define rep(i,b) loop(i,0,b)
#define each(e,c) for(auto&e:c)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
#define lb lower_bound
#define ub upper_bound
#ifdef DEBUG
#define dump(...) (cerr<<#__VA_ARGS__<<" = "<<(DUMP(),__VA_ARGS__).str()<<" ["<<__LINE__<<"]"<<endl)
struct DUMP:ostringstream{template<class T>DUMP &operator,(const T&t){if(this->tellp())*this<<", ";*this<<t;return *this;}};
#else
#define dump(...)
#endif

int const N=2000000+10;
int cnt[N+10];

int main(){
    memset(cnt,0,sizeof(cnt));
    for(int i=2;i<=N;i++){
        if(cnt[i]) continue;
        cnt[i] = 1;
        for(int j=i+i;j<=N;j+=i){
            cnt[j]++;
        }
    }

    int n,k;
    cin>>n>>k;
    int ans = 0;
    for(int i=1;i<=n;i++){
        ans += cnt[i]>=k;
    }
    cout << ans << endl;
}