#include <bits/stdc++.h>
using namespace std;
bool NT[1005];
int primes[1005];
int main() 
{
    ios_base::sync_with_stdio(0);
    memset(NT,true,sizeof(NT));
    freopen("BAI3.inp","r",stdin);
    freopen("BAI3.out","w",stdout);
    NT[0]=false;
    NT[1]=false;
    for (int i=2; i<=35; i++)
    {
        if (NT[i]==true)
        {
            for (int j=i*i;j<=1005;j=j+i)
            {
                NT[j]=false;
            }
        }
    }
    int n,k;
    cin >> n >> k;
    int nto=1;
    for (int i=0; i<=1004; i++)
    {
        if (NT[i]) {primes[nto]=i;  nto++;}
    }
    int res=0;
    for (int i=1; i<=n; i++)
    {
        int t=i;
        int temp=9999999;
        for (int v = 1; v<=nto-1; v++)
        {
            while (t%primes[v]==0)
            {
                temp = primes[v];
                t=t/primes[v];
            }
            if (t==1) break;
        }
        if (t!=1) temp = t;
        if (temp<=k) res++;
        
    }
    cout << res;
    return 0;
}