CAS: log of large integers?
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05-22-2015, 04:57 PM
Post: #6
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RE: CAS: log of large integers?
(05-21-2015 06:37 AM)Joe Horn Wrote: The HP 50g nicely returns 777 if you do 777 ALOG LOG in exact mode, even though 10^777 is larger than the 50g's MAXREAL. But Prime returns +Inf for log10(10^777), even though 10^777 is an exact integer. Apparently Prime first tries to convert the argument to a real, which in this case immediately overflows. I'm sorry none of the members on the Prime side have tried to answer your question - perhaps they're too busy enjoying the new features & trying to find out how the machine actually works to bother with a fiddly number programming problem. You did however prompt me to (try to) deal with the matter on the 50G, so thanks for the stimulus. |
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