public class numero_3 {
    static int max=0;
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        long nb=600851475143L;
        long td=System.nanoTime();
        test(nb);
        long tf= System.nanoTime();
        System.out.println((tf-td)/Math.pow(10,6));

    }

    public static void test(long nb){
        for(int i=2;i<=nb;i++){
            if(nb%i==0){
                test(nb/i);
                System.out.println(i);
                break;
            }else{
                if(nb==i){
                    break;
                }
            }
        }
    }
}