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Re: GRU and NTG record

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  • Tom
    ... Thanks! Details of the CHG proof (29.6%) are posted at: http://xenon.stanford.edu/~tjw/pp/34120_11311/index.html The Primo certificate has been submitted
    Message 1 of 5 , Sep 1, 2011
      --- In primenumbers@yahoogroups.com, "djbroadhurst" <d.broadhurst@...> wrote:
      >
      > Congrats to Tom for beating the GRU and NTG records, with
      > http://primes.utm.edu/primes/page.php?id=101439
      > helped by a monster Primo proof:
      > http://primes.utm.edu/primes/page.php?id=101438
      >
      > David
      >

      Thanks! Details of the CHG proof (29.6%) are posted at:

      http://xenon.stanford.edu/~tjw/pp/34120_11311/index.html

      The Primo certificate has been submitted to Marcel Martin's Top-20 list.

      Tom
    • djbroadhurst
      ... The next-to-largest helper Phi(754,34120)/(40476229*76657481993) was also rather useful, not so? How long might CHG have taken without it? Best regards
      Message 2 of 5 , Sep 1, 2011
        --- In primenumbers@yahoogroups.com,
        "Tom" <tjw99@...> wrote:

        > Details of the CHG proof (29.6%) are posted at:
        > http://xenon.stanford.edu/~tjw/pp/34120_11311/index.html
        > The Primo certificate has been submitted to
        > Marcel Martin's Top-20 list.

        The next-to-largest helper
        Phi(754,34120)/(40476229*76657481993)
        was also rather useful, not so?
        How long might CHG have taken without it?

        Best regards

        David
      • Tom
        ... Without the 2.9% factorization from the p1505 helper, I would have had to run CHG at 26.7%, similar to Andy s proof of Phi(3793,18371). CHG would probably
        Message 3 of 5 , Sep 1, 2011
          --- In primenumbers@yahoogroups.com, "djbroadhurst" <d.broadhurst@...> wrote:
          >
          > The next-to-largest helper
          > Phi(754,34120)/(40476229*76657481993)
          > was also rather useful, not so?
          > How long might CHG have taken without it?
          >
          > Best regards
          >
          > David
          >

          Without the 2.9% factorization from the p1505 helper, I would have had to run CHG at 26.7%, similar to Andy's proof of Phi(3793,18371). CHG would probably need h=15 or more, and with a candidate over 50k digits, I'd guess it would have taken on the order of one week for the CHG part of the proof, depending on how many CPUs I devoted to the task.

          Certainly it's more than the:
          >Total=5491s
          time that Primo 4.0.0 LG32 spent on the ECPP certificate for p1505.

          The Primo certificate for p12155 is now online at:

          http://www.ellipsa.eu/public/primo/files/ecpp12155.zip

          Incidentally this appears to be the first time the Top-5000 canonicalizer did not alter the form of my ECPP prime submission.

          Tom
        • Bouk de Water
          Very impressive! Congratulations! The NTG record has been ours (David and me) for a very long time. I m actually quite happy somebody broke it. Time to take it
          Message 4 of 5 , Sep 6, 2011
            Very impressive! Congratulations!

            The NTG record has been ours (David and me) for a very long time. I'm actually quite happy somebody broke it.

            Time to take it back ;-)

            All te best,

            Bouk.

            ----- Original Message -----
            From: Tom <tjw99@...>
            To: primenumbers@yahoogroups.com
            Cc:
            Sent: Friday, September 2, 2011 1:01 AM
            Subject: [PrimeNumbers] Re: GRU and NTG record

            --- In primenumbers@yahoogroups.com, "djbroadhurst" <d.broadhurst@...> wrote:
            >
            > Congrats to Tom for beating the GRU and NTG records, with
            > http://primes.utm.edu/primes/page.php?id=101439
            > helped by a monster Primo proof:
            > http://primes.utm.edu/primes/page.php?id=101438
            >
            > David
            >

            Thanks!  Details of the CHG proof (29.6%) are posted at:

            http://xenon.stanford.edu/~tjw/pp/34120_11311/index.html

            The Primo certificate has been submitted to Marcel Martin's Top-20 list.

            Tom



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