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MathGroup Archive 2007

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FactorInteger slow in V6.0 vs V5.2

  • To: mathgroup at smc.vnet.net
  • Subject: [mg81116] FactorInteger slow in V6.0 vs V5.2
  • From: Mark Fisher <particlefilter at gmail.com>
  • Date: Thu, 13 Sep 2007 06:22:55 -0400 (EDT)

In version 5.2 the following runs pretty fast (not more than a couple
of minutes)

FactorInteger[2^227-1]

but quite slow in version 6.0 (I'm not sure how long). Any ideas as to
why?

--Mark



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