import java.math.*;
import java.util.*;

class Main{
	
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        int ans=0;
        for(int i=2;i<=n;i++){
        	int num=i;
        	int temp=0;
        	for(int j=2;j*j<=num;j++){
        		if(num%j==0) temp++;
        		while(num%j==0){
        			num/=j;
        		}
        	}
        	if(num>1) temp++;
        	if(temp>=k) ans++;
        	
        }
        System.out.println(ans);
    }
}