import java.util.*;

public class Exercise137{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    int n = sc.nextInt();
    int k = sc.nextInt();
    int count = 0;
    for(int i = 2; i < n + 1; i++){
      int x = i;
      int pCount = 0;
      int lastNum = 2;
      if(x % 2 == 0){
        pCount++;
      }
      while(x % 2 == 0){
        x /= 2;
      }
      for(int j = 3; j * j <= x; j += 2){
        if(x % j == 0){
          pCount++;
        }
        while(x % j == 0){
          x /= j;
        }
        lastNum = j;
      }
      if(x > lastNum){
        pCount++;
      }
      if(pCount >= k){
        count++;
      }
    }
    System.out.println(count);
  }
}