#include <iostream>
#include <vector>
using namespace std;

int main(void)
{
    int n;
    int k;
    vector<int> v;
    cin >> n >> k;
    v.resize(n + 1, 0);
    for(int i = 2; i <= n; i++) {
        if(v[i] != 0)
            continue;
        for(int j = i; j <= n; j += i)
            v[j]++;
    }
    int c = 0;
    for(int i = 2; i <= n; i++)
        if(v[i] >= k)
            c++;
    cout << c << endl;
    return 0;
}