I'm digging up this old thread, and giving it life once again. I have rewritten the base converter and added several new functions. It now converts much larger numbers with greater precision. It also has the ability to convert between bases.

Example of large number:
BASE *0
Code:
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converted to

BASE 2
Code:
**0**0*0***0*0*0**00****00****0*00**0*****0**00***0000*0***0*00*00***00**0**0**00000*00*0*00*0***0*00**00****00000**0*00**0*00000**0*****0**0****0*0*0**00*00**000***0*000***000***0*0***00**00*0*0000000****00**00*000000*0*000000*000***0**0**00***0*00**00***0*0***00000000*0000000*0000**0******00*00**000*0*000****00*0*****0*0**00***0*00*0*0*00*0***0***0*00**00*0**0*00**0*0000**00000******0000**0*0***0***0**0*****0**0**0*0*0*0000*0**000**0*00*0**0*00***0000*0**00000*0**000*0*****0****000*0**0****0*0*0*000**000*0000**00*000****00000*0000*00**0*000**0**0**0*****00000*00**0***0**00*0*000*0***0*000**0*000*00**00*000*00000**00*00000**0000*00000*0**0*000*000*0*00*0**0*0*****0000*0000*000*00**0*00***0*0****000000*0000**0**0***0*000********0**00*0*0*0**00****0*0**0*00**00*0**0****0*0***0**0*0*0***0*0**00**0**0**00**0**00*00*0***0*000***000***0*0**00*0**0*0**00**000000*00*0*00*0***00*000*0000*0000*****0*0**00*000*****00*****0**0000*00**0*0**00000***00*000**0*0***00000**0*00**00*00000**0*0***0*00*0**00*0*00*0*000**0****0**000000*000****0*00*0**0*0*0*0***0*****0***00*0*****000*0*0*0***000*****000*0********000**0*0*00*0*0000*0000*****0*00*00*000*****0*0*0*000*****00**00*0000****0000***0**000*0***0*0*000***0**00****0*0*****000*0*0*0****000000***00000*0**00*0*0**000*00000**000*00**0000*0***0****00**00*0****00**0****00****0****00*0*0*****0**0**00***0*00****0*0**000****0**00*00**0*0*0*00000*0**0000*0*0*00000***0*00**0*0**000*0000*****000***0****0*0000*0******0**0**00**0**0**00****000****00*00**00*0****00*0*0****0*000*000*0**00***0*0**0**00*000**00**00***00**0***00*0*00****00**0*000***000000***0**0000********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************
DEMO is live here: [url=http://syntax******.info/_test/number_system.php]Base Conversion Demo[/url]