#include<fstream>
using namespace std;
ifstream f("ciur.in");
ofstream g("ciur.out");
int p[200001];//p[i]==0 daca i este prim
int n,i,j,nr=0;
int main()
{   f>>n;
        for(i=2;i<=n;i++)
        if(p[i]==0)
       {    nr++;g<<i<<" ";
            for(j=i+i;j<=n;j=j+i)p[i]=1;
       }
     g<<"\n Am gasit "<<nr<<" numere prime";
     g.close(); return 0;
}