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