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