import java.util.Scanner;


public class Main_yukicoder106 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int k = sc.nextInt();

        int[] cnt = new int[Math.max(3 + 1, n + 1)];
        for (int i = 2; i * i <= Math.max(9, n); i++) {
        	if (cnt[i] == 0) {
        		for (int j = 1; i * j <= n; j++) {
        			cnt[i * j]++;
        		}
        	}
        }

        int ret = 0;
        for (int i = 2; i <= n; i++) {
        	if (cnt[i] >= k) {
        		ret++;
        	}
        }

        System.out.println(ret);

        sc.close();
    }
}