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7th AP24

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  • jarek372000
    Raanan s computers produced 7th known AP24: 1630799846252777 + 985151*23#*n, for n=0 to 23 It sets no record (although it has the largest known start).
    Message 1 of 32 , Apr 24, 2008
      Raanan's computers produced 7th known AP24:

      1630799846252777 + 985151*23#*n, for n=0 to 23

      It sets no record (although it has the largest known start).

      Unfortunately, we have almost used up the best search area suitable
      for my program and we will have to move to progressions with larger
      start, where primes are less frequent :-(

      Below is summary of all known AP24 sorted by progression difference.
      After each progression I have given start and end divided by 10^15:

      515486946529943 + 136831*23#*n, for n=0 to 23, 0.515487 - 1.21759
      1368212299836997 + 148682*23#*n, for n=0 to 23, 1.36821 - 2.13112
      468395662504823 + 205619*23#*n, for n=0 to 23, 0.468396 - 1.52345
      401516288036293 + 608239*23#*n, for n=0 to 23, 0.401516 - 3.52247
      1630799846252777 + 985151*23#*n, for n=0 to 23, 1.6308 - 6.68574
      1564588127269043 + 1249750*23#*n, for n=0 to 23, 1.56459 - 7.97723
      1606021011322579 + 3490622*23#*n, for n=0 to 23, 1.60602 - 19.5169

      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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