Big Factorial Using Java..Source Code

Big Factorial!!! Have a fun..........

import java.math.BigInteger;

public class Factorial {

    public static void main(String[] shan) {

            BigInteger bigInteger =  BigInteger.valueOf(1);

            for (int i = 2; i <= 100; i++)    // calculate 100!
                       bigInteger = bigInteger.multiply(BigInteger.valueOf(i));
          
                      System.out.println(bigInteger);
           
            System.out.println("Length is: "+bigInteger.toString().length());
   
    }

}

The output :::

933262154439441526816992388562667004907159682643816214
685929638952175999932299156089414639761565182862536979
20827223758251185210916864000000000000000000000000

Length is: 158