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Re: World Record Factorial Prime

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  • djbroadhurst
    ... Wonderful work, by all concerned. PrimeMogul is cautious and runs an old OpenPFGW as a validator. He has marked the -tp proof of
    Message 1 of 4 , Oct 8, 2010
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      --- In primenumbers@yahoogroups.com,
      Mark Rodenkirch <mgrogue@...> wrote:

      > 94550!-1 is prime and is 429,390 digits long.

      Wonderful work, by all concerned.

      PrimeMogul is cautious and runs an old OpenPFGW
      as a validator. He has marked the -tp proof of
      http://primes.utm.edu/primes/page.php?id=95248
      as "external", i.e. tedious to do at home.
      But I expect that Chris's run will eventually
      "internalize" the proof, after a week, or so,
      rather than a PrimeGrid day.

      David
    • paulunderwooduk
      ... In deed! machine RedHat P4 P4 Command: /home/caldwell/client/TrialDiv/TrialDiv -q 1 94550 ! -1 2 &1 [Ellapsed time: 37239.758 seconds] 1+sqrt(94561)
      Message 2 of 4 , Oct 9, 2010
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        --- In primenumbers@yahoogroups.com, "djbroadhurst" <d.broadhurst@...> wrote:
        >
        >
        >
        > --- In primenumbers@yahoogroups.com,
        > Mark Rodenkirch <mgrogue@> wrote:
        >
        > > 94550!-1 is prime and is 429,390 digits long.
        >
        > Wonderful work, by all concerned.
        >
        > PrimeMogul is cautious and runs an old OpenPFGW
        > as a validator. He has marked the -tp proof of
        > http://primes.utm.edu/primes/page.php?id=95248
        > as "external", i.e. tedious to do at home.
        > But I expect that Chris's run will eventually
        > "internalize" the proof, after a week, or so,
        > rather than a PrimeGrid day.
        >

        In deed!

        machine RedHat P4 P4

        Command: /home/caldwell/client/TrialDiv/TrialDiv -q 1 94550 ! -1 2>&1
        [Ellapsed time: 37239.758 seconds]

        1+sqrt(94561)
        Running N+1 test using discriminant 94561, base 2+sqrt(94561)
        Calling Brillhart-Lehmer-Selfridge with factored part 33.53%
        94550!-1 is prime! (309659.2942s+2.1227s)
        [Elapsed time: 3.58 days]

        ref: http://primes.utm.edu/primes/page.php?id=95248

        Paul
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