#include <bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    

    int Need = 2000000;
    vector<int> allp;
    vector<bool> prime(Need+1,true);
    prime.at(0) = false; prime.at(1) = false;
    for(int i=2; i<=Need; i++){
        if(!prime.at(i)) continue;
        allp.push_back(i);
        for(long long k=((long long)i)*i; k<=Need; k+=i) prime.at(k) = false;
    }
    int N,K; cin >> N >> K;
    int answer = 0;
    for(int i=2; i<=N; i++){
        int v = i,now = 0;
        for(auto p : allp){
            if(p*p > v) break;
            if(v%p) continue;
            now++;
            while(v%p == 0) v /= p;
        }
        if(v != 1) now++;
        answer += now>=K;
    }
    cout << answer << endl;
}