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MathGroup Archive 2005

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Prime[] slows down

  • To: mathgroup at
  • Subject: [mg53536] Prime[] slows down
  • From: George Szpiro <george at>
  • Date: Sat, 15 Jan 2005 21:08:26 -0500 (EST)
  • Sender: owner-wri-mathgroup at

can somebody explain why Prime[...] slows down so abruptly at about 105 
million (see below)? [Contact the author for the attachments - moderator]

also: how can I get elapsed time in fractions of seconds? (Timing[...] did 
not work inside the loop for some reason.)AboluteTime to give


george at

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