#include <iostream>
#include <vector>

using namespace std;

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

    int N, K, i, j, ans = 0;
    cin >> N >> K;
    vector<int> count(N + 1, 0);

    for (i = 2; i <= N; ++i)
    {
        if (count[i] == 0)
        {
            count[i] = 1;
            for (j = i * 2; j <= N; j += i)
                ++count[j];
        }

        if (count[i] >= K)
            ++ans;
    }

    cout << ans << '\n';
    return 0;
}