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Re: Timing of N[ Factorial[4000000], 18]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg95689] Re: [mg95659] Timing of N[ Factorial[4000000], 18]
  • From: Robert Pigeon <robert.pigeon at videotron.ca>
  • Date: Sun, 25 Jan 2009 06:49:34 -0500 (EST)
  • References: <200901241118.GAA04803@smc.vnet.net>

$Version
"7.0 for Microsoft Windows (32-bit) (November 10, 2008)"


{7.55, 5.46787756151445098*10^24671065}

Robert

-----Original Message-----
From: Ted Ersek [mailto:ersekt at md.metrocast.net] 
Sent: 24 janvier 2009 06:18
To: mathgroup at smc.vnet.net
Subject: [mg95689] [mg95659] Timing of N[ Factorial[4000000], 18]

How long does it take Mathematica 7 to compute
   N[ Factorial[4000000], 18]

With the old version of Mathematica I have it takes a very long time, 
and I was wondering if Mathematica 7 is much better.  You might ask why 
I wanted to do that.  Well I wanted to see how quickly Stirling's 
formula approaches  Factorial[n]  for large n.

------------------------
Thanks,
     Ted Ersek




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