Im tring to raise 10 to the power of a number betwee -400 and -500 but excel and other calculator I've used don't keep it up. Is there someone here who has one or know a powerful online scientific calculator?

Question

jack1 · Answer

most would give you the answer in scientific form anyway... which would equal the input dude...
ie 1x10^-400 or 500

jack1 · Answer

if it's just 10^-400/500 ish, and u want the longhand answer, why not just write out the 399 zeros after your decimal place ?

jack1 · Answer

just from google: maybe try: http://web2.0calc.com/ or wolfram?