#include <cstdio>

bool isNotPrime[2000001];
int minFactor[2000001], factor_n[2000001];

int main(){
    for(int i=2;i<=2000000;i+=2){
        isNotPrime[i] = true;
        minFactor[i] = 2;
    }
    minFactor[2] = 2;
    for(int i=3;i<=2000000;i+=2){
        if(!isNotPrime[i]){
            minFactor[i] = i;
            for(int j=2*i;j<=2000000;j+=i){
                isNotPrime[j] = true;
                minFactor[j] = i;                
            }
        }
    }
    for(int i=2;i<=2000000;i++){
        if(!isNotPrime[i]){
            factor_n[i] = 1;
        }else{
            factor_n[i] = factor_n[i/minFactor[i]] + (i/minFactor[i]%minFactor[i] != 0);
        }
    }
    
    int N, K;
    scanf("%lld %d", &N, &K);

    int res = 0;
    for(int i=2;i<=N;i++){
        res += factor_n[i] >= K;
    }
    
    printf("%d\n", res);
}