Loading ...
Sorry, an error occurred while loading the content.

24120Re: [PrimeNumbers] Re: 13-chains of consecutive smooth numbers

Expand Messages
  • Jim White
    Mar 5, 2012
    • 0 Attachment
      I can't use that file, I don't have XL.  Any chance
      of a text export? eg comma-separated fields

      From: Andrey Kulsha <Andrey_601@...>
      To: PrimeNumbers@...
      Sent: Tuesday, 6 March 2012, 6:28
      Subject: [PrimeNumbers] Re: 13-chains of consecutive smooth numbers


      > Andrey's chain puzzle is interesting. Could it
      > be he already has found the maximum possible
      > result for chain length 13?

      No, I think that log/log ratio has no limit.

      > Perhaps the 14-chain at N = 4532039198639948
      > might be a good result? What are the best known
      > results for 14 or longer chains?

      Brute force search yielded:
      N = 505756884840 for 14-chain
      N = 285377140980 for 15-chain
      N = 32290958458 for 16-chain
      as listed in http://www.primefan.ru/stuff/math/maxs.xls
      (there k+1 is chain length)

      Best regards,


      [Non-text portions of this message have been removed]
    • Show all 17 messages in this topic