import java.util.Scanner; public class Main{ public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); if(n % 2 == 0){ System.out.print(2 + " "); } if(n % 3 == 0){ System.out.print(3 + " "); } if(n % 7 == 0){ System.out.print(7 + " "); } if(n % 2 != 0 && n% 3 != 0 && n % 7 != 0){ System.out.print("n"); } } }