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

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