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Re: Large Numbers [message #64986 is a reply to message #64985]

Fri, 06 February 2009 17:14

pgrigis
Messages: 436
Registered: September 2007

Senior Member

David Fanning wrote:
> David Fanning writes:
>
>> Uh, probably, if I can find those dusty books
>> down in the basement. :-(
>
> I found my slide rule. Maybe that will help.

For instance, you can easily find that
1000!=4.023*10E2567

How?

the trick is that
gamma(x+1)=factorial(x)

therefore, alog(factorial(1000))=lngamma(1001)=2567.6046
10^0.6046=4.023

1000!=4.023*10E2567

Ciao,
Paolo

>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Large Numbers By: David Fanning on Fri, 06 February 2009 20:13
		Re: Large Numbers By: pgrigis on Fri, 06 February 2009 20:06
		Re: Large Numbers By: David Fanning on Fri, 06 February 2009 19:59
		Re: Large Numbers By: David Fanning on Fri, 06 February 2009 19:53
		Re: Large Numbers By: Kenneth P. Bowman on Fri, 06 February 2009 18:57
		Re: Large Numbers By: pgrigis on Fri, 06 February 2009 17:14
		Re: Large Numbers By: David Fanning on Fri, 06 February 2009 16:54
		Re: Large Numbers By: David Fanning on Fri, 06 February 2009 16:50
		Re: Large Numbers By: Chris[6] on Fri, 06 February 2009 16:49
		Re: Large Numbers By: pgrigis on Fri, 06 February 2009 15:35
		Re: Large Numbers By: Jeremy Bailin on Mon, 09 February 2009 20:28
		Re: Large Numbers By: Michael Galloy on Tue, 10 February 2009 09:28

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