"James Reeves" <jree...@weavejester.com> wrote:

>On 15 July 2010 16:24, Brisance <cru...@gmail.com> wrote:
>> Thanks for the response.
>>
>> To get an idea of what I mean,  visit http://www.wolframalpha.com/''.
>> Then enter something ridiculous (to me, at least) like 100000!
>>
>> The answer is almost instantaneous.
>
>Wolfram Alpha is merely approximating the result to a certain
>precision. I highly doubt it's actually calculating the whole number
>and then just stripping off the first N digits!

Stirlings approximation. The version I posted earlier used a form of it as 
well. There are also formulas for the other values Wolfram gives.
-- 
Sent from my Android phone with K-9 Mail. Please excuse my brevity.

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