#include <stdio.h>

#define PMAX	(2000000)

char prime[PMAX];

void getPrime(int p){
    int i,j;
	
    for(i=0;i<p;i++){
        prime[i] = 1;
        if((i&1) == 0){
            prime[i] = 0;
        }
    }
    
    prime[0]=0;
    prime[1]=0;
    prime[2]=1;
	
    for(i=3;i*i<=p;i+=2){
        for(j=i+i;j<=p;j+=i){
            prime[j]=0;
        }
    }
}

int main(void){
	int i,j,N,K;
	int ans = 0;
	
	getPrime(PMAX);
	
	scanf("%d %d", &N, &K);
	
	for(i=2;i<=N;i++){
		int cnt=0;
		int tmp = i;
//		if(prime[i] == 1){continue;}
		
		for(j=2;j<=PMAX;j++){
			if(tmp < j){break;}
			if(prime[tmp] == 1){
				cnt+=1;
				break;
			}
			if(prime[j] == 0){continue;}
			if(tmp%j==0){
				cnt++;
			}
			while(tmp%j==0){
				tmp/=j;
			}
			if(prime[tmp] == 1){
				cnt+=1;
				break;
			}
		}
		if(cnt >= K){
			ans += 1;
		}else{
//			printf("%d\n", i);
		}
	}
	
	printf("%d\n", ans);
	return 0;
}