#include<stdio.h>
FILE *in,*out;
int n,ciur[10001],i,j;
int main()
{
    in=fopen("ciur.in","rt");
    out=fopen("ciur.out","wt");
    fscanf(in,"%d",&n);
    for(i=2;i<=n;i++)
        ciur[i]=1;
    for(i=2;i*i<=n;i++)
    {
        if(ciur[i])
        {
            for(j=2;j*i<=n;j++)
            {
                ciur[j*i]=0;
            }
        }

    }
    for(i=2;i<=n;i++)
    {
       if(ciur[i])
            fprintf(out,"%d \n",i);
    }
    fclose(in);
    fclose(out);
    return 0;
}