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Fibonacci and Lucas factors

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  • Bernardo Boncompagni
    [crosspost to: primenumbers@yahoogroups.com, primeform@yahoogroups.com] A few days ago, David Broadhurst made some hard-to-find large Fibonacci PRPs public
    Message 1 of 1 , Jan 2, 2012
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      [crosspost to: primenumbers@yahoogroups.com, primeform@yahoogroups.com]

      A few days ago, David Broadhurst made some hard-to-find large Fibonacci
      PRPs public <http://tech.groups.yahoo.com/group/primeform/message/11189>for
      primality certification after a private conversation which triggered
      the idea to extend the Fibonacci and Lucas factorizations
      database<http://mersennus.net/fibonacci/>beyond the current index
      limit of 10000. Given the recent improvements in
      the PRIMO project <http://www.ellipsa.eu/>, now allowing the certification
      of numbers at around 10,000 digits with reasonable effort, a new index
      limit of 50000 seemed a good start, considering that the 50000th Fibonacci
      number is 10450 digits long.

      At the moment, the new database <http://fibonacci.redgolpe.com> already
      contains more than 45,000 factors and over 300 probable primes, mostly
      thanks to David's generous contribution to posterity.

      Feel free to post or mail suggestions, new factors, PRPs, unknown (to me)
      repositories or anything you feel could improve this new distributed
      project. All contributors will obviously have their name listed on the
      website.


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