#include<bits/stdc++.h>
using namespace std;
long long m,f;
int main(){
    cin>>m;
    if(m%3==0) cout<<3<<" "; f++;
    if(m%5==0) cout<<5<<" "; f++;
    if(m%7==0) cout<<7; f++;
    if(!f) cout<<"n";
    return 0;
}

无语啦