bigger than long

[scorp200]

hey im working on new program that multiply all the numbers that lower than the input,
here the code:

 import java.util.*;
   import TerminalIO.KeyboardReader;
    public class count
   {
       public static void main(String[]args)
      {
         KeyboardReader input = new KeyboardReader();
         int check=input.readInt("Enter number: ");
         long count=1;
         while (check>=1)
         {
            count*=check;
            check--;
         }
         System.out.println(count);		  
      
      }
   
   }

when the input is around 30 the output is negative
and when its 66+, its 0.
is there some thing bigger than long?
or there is other way?

[pbrockway2]

s there some thing bigger than long?

BigInteger

or there is other way?

Stirling's approximation

[scorp200]

i figured it out
thanks, big integer is really usefull

[pbrockway2]

You're welcome.