#include <bits/stdc++.h>
using namespace std;
int n,k,a[2000010],ans;
int main(){
    cin>>n>>k;
    for(int i=2;i<=n;++i)
        if(a[i]==0)
            for(int j=i;j<=n;j+=i)
                ++a[j];
    for(int i=2;i<=n;++i)
        if(a[i]>=k)
            ++ans;
    cout<<ans;
    return 0;
}