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  1. #1
    I love 67607
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    If I'm not mistaken, Prime95 suggests a B2/B1 ratio of around 20 for B1 values at 1,000,000.

  2. #2
    Moderator vjs's Avatar
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    Yup that's always the point...

    One could also say, you could have simply taken the number

    67607*2^202131+1

    and divided it by

    3617343986912807923736443

    Seriously though, what were your memory requirements like for the stage2 portion. Also time to complete for each stage, a 1:100 ratio for B1:B2 seems a little high but it works.

    Are you doing stage two with prime95 have they married the two clients yet.

  3. #3
    Senior Member
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    It was a windows box that wasn't networked and that I would only visit once a week or so. So I wanted to give it a big chunk of work without worrying about it, hence the large bounds.
    Quad 2.5GHz G5 PowerMac. Mmmmm.
    My Current Sieve Progress: http://www.greenbank.org/cgi-bin/proth.cgi

  4. #4
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    [Fri Feb 24 07:35:05 2006]
    ECM found a factor in curve #80, stage #2
    Sigma=4857056233298550, B1=250000, B2=25000000.
    33661*2^5112+1 has a factor: 1462205790618779672559199619

    28 digits. 6th smallest n for that k. And it realy is prime this time.

  5. #5
    Knight of the Old Code KWSN_Dagger's Avatar
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    [Sat May 13 01:18:10 2006]
    P-1 found a factor in stage #2, B1=70000, B2=822500.
    24737*2^11050087+1 has a factor: 594262015630211281

    p-1= 2 ^ 4 x 3 x 5 x 11 x 17093 x 54449 x 241861

    2^4??

    And of course it has to be a composite.

  6. #6
    [Fri Oct 26 22:49:45 2007]
    P-1 found a factor in stage #2, B1=130000, B2=2200000.
    55459*2^15009238+1 has a factor: 5155366181720738537

    and the factor is prime

  7. #7
    [Fri Dec 14 17:07:25 2007]
    ECM found a factor in curve #2260, stage #1
    Sigma=7131277753749641, B1=3000000, B2=300000000.
    10223*2^1181+1 has a factor: 2869295942753555058435842630879466239475749080003

    The factor is prime.

    49 digits long.

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