Factorial

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.math.BigInteger;
import java.util.Scanner;

public class FactorsOfFactorial {

		public static void main(String[] args)
		{
			while(true)
			{
				BigInteger n = BigInteger.valueOf(new Scanner(System.in).nextInt());
				factorial(n);
			}
		}

		public static BigInteger recursiveFactorial(BigInteger n)
		{
			if(n.equals(BigInteger.ONE))
				return BigInteger.ONE;


			return n.multiply(recursiveFactorial(n.subtract(BigInteger.ONE)));
		}

		public static void factorial(BigInteger n)
		{
			BigInteger val = BigInteger.ONE;
			for(BigInteger i = n; i.compareTo(BigInteger.ONE) == 1; i = i.subtract(BigInteger.ONE))
			{
				val = val.multiply(i);
				System.out.println("i: " + i);
			}

			File f = new File("fact1.out");
			try {
				f.createNewFile();
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}

			FileWriter scan;
			try {
				scan = new FileWriter(f);
				scan.write(val.toString());
				scan.close();
				System.out.println("Printed");
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
}