import java.util.Scanner;
public class Yukicoder106 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n=sc.nextInt(), k=sc.nextInt(), res=0;
		int[] cnt = new int[n+1];
		for (int i=2; i<=n; i++) if (cnt[i]==0) for (int j=1; i*j<=n; j++) cnt[i*j]++;
		for (int i=2; i<=n; i++) if (cnt[i]>=k) res++;
		System.out.println(res);
	}
}