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274RE: [PrimeNumbers] NewPGen 2.4 available.

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  • Robert Sitton
    Feb 1, 2001
      Is it possible to get the source to this package or other prime number
      packages?

      Robert L. Sitton
      Software Engineer
      ICQ: 28332295
      Fax: 303-975-6336

      Daring ideas are like chess men moved forward. They may be beaten, but they
      may start a winning game.-- Goethe

      -----Original Message-----
      From: Paul Jobling [mailto:Paul.Jobling@...]
      Sent: Thursday, February 01, 2001 3:38 AM
      To: Primes-L (E-mail); Primeform (E-mail)
      Subject: [PrimeNumbers] NewPGen 2.4 available.

      Hi all,

      There is a new minor release of NewPGen available at:

      http://www.utm.edu/research/primes/programs/NewPGen/

      This release includes the following:

      - If the bitmap is too small to sieve the range that you want to sieve,
      NewPGen will break it up and sieve each in turn up to 1 billion before
      recombining them and sieving as normal. So if the bitmap can only hold 1
      million k's and you want to sieve 10 million k's, NewPGen will sieve the k's
      from 1 to 1 million (up to p=1 billion); then the k's from 1 million to 2
      million (up to p=1 billion); etc, then it will combine the results of these
      together before sieving on from 1 billion.

      I have used this a lot myself while testing the software and it means that
      you
      don't now need a huge amount of RAM to sieve wide ranges.

      - The "Iterations between automatic saves" has been turned into "Minutes
      between automatic saves"

      - The k.2^n sieves run ~5% faster on some processors

      Regards,

      Paul.


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