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11677Re: [PrimeNumbers] Re: Isomorphic Numbers

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  • Phil Carmody
    Mar 5, 2003
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      --- Phil Carmody <thefatphil@...> wrote:
      > > run length 8 -> (5255..5262)
      > > run length 9 -> (8009..8017)
      > > run length 10 -> (16268..16277)
      > > run length 11 -> (16268..16278)
      > > run length 12 -> (118151..118162)
      > > run length 13 -> (252035..252047)
      > > run length 14 -> (267485..267498)
      > > run length 15 -> (267485..267499)
      > > run length 16 -> (305923..305938)
      > 5901351..5901367 is len 17 (16s)
      > 6120922..6120939 is len 18 (<1s)
      > 15736249..15736267 is len 19 (35s)
      > 15736249..15736268 is len 20 (instant)
      > 75952831..75952851 is len 21 (3m49s)
      > 311606294..311606315 is len 22 (15m9s)

      311606294..311606316 is len 23 (instant, doh!)
      467282388..467282411 is len 24 (9m50s)
      1142221381..1142221405 is len 25 (42m33s)

      It was only 4% faster looking for ones with primes in the range. So I think
      that for me it would make sense to look for all such runs, regardless of the
      existance of primes in the sum's range.

      Phil


      =====
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