Going past the float size limits?

[jimmy.musselwhite at gmail.com]

Hello all
It would be great if I could make a number that can go beyond current
size limitations. Is there any sort of external library that can have
infinitely huge numbers? Way way way way beyond say 5x10^350 or
whatever it is?

I'm hitting that "inf" boundary rather fast and I can't seem to work
around it.

Thanks!