#include<bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false); 

    int n;
    cin>>n;
    vector<int> cnt(n+1,0);
    for(int i = 2;i<=n;i++){
        if(cnt[i]>0) continue;
        for(int j = i;j<=n;j+=i) cnt[j]++;
    }
    int ans = 0;
    int k;
    cin>>k;
    for(int i = 2;i<=n;i++) if(cnt[i]>=k) ans++;
    cout<<ans<<endl;
}