using System;

class Program
{
    static void Main()
    {
        var temp = Console.ReadLine().Split();
        int n = int.Parse(temp[0]);
        int k = int.Parse(temp[1]);

        int ans = 0;

        for (int i = 2; i <= n; i++)
        {
            int cnt = 0;
            int t = i;
            for (int j = 2; j <= i; j++)
            {
                if (t % j == 0) cnt++;
                else continue;

                if (cnt >= k)
                {
                    ans++;
                    break;
                }
                
                while (true)
                {
                    if (t % j == 0) t /= j;
                    else break;
                }
            }
        }

        Console.WriteLine(ans);
    }
}