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Minimal difference AP21

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  • jarek372000
    The following result 809504830479349+208*19#*n, n=0...20 (Pawel Nowak, Jaroslaw Wroblewski, December 31, 2007) improves the AP21 minimal difference (2681*19#)
    Message 1 of 32 , Dec 31, 2007
      The following result

      809504830479349+208*19#*n, n=0...20
      (Pawel Nowak, Jaroslaw Wroblewski, December 31, 2007)

      improves the AP21 minimal difference (2681*19#) record by Paul
      Pritchard (1992).

      This result is part of Pawel Nowak's MSc. thesis about parallel
      computing. My contribution was explaining to Pawel the details of the
      algorithm I had used to find AP24, suggesting to attack this
      particular record, and giving some hints about the settings to use.
      Pawel has written his own implementation of the algorithm and did all
      the computations.

      Jarek
    • Sean A. Irvine
      Very nice.
      Message 32 of 32 , May 18, 2008
        Very nice.

        jarek372000 wrote:
        > Here is the first known AP25:
        >
        > 6171054912832631 + 366384*23#*n, for n=0 to 24
        > (Raanan Chermoni & Jaroslaw Wroblewski, May 17 2008)
        >
        > Jarek
        >
        >
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