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20522Fwd: [PrimeNumbers] Re: Small prime divisors of very large numbers

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  • David Broadhurst
    Jun 30, 2009
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      --- In primenumbers@yahoogroups.com,
      LĂ©lio Ribeiro de Paula <lelio73@...> wrote:

      > I have not been able to prove 29 is a factor.

      More clues:

      eulerphi(29) = 28
      eulerphi(28) = 12
      eulerphi(12) = 4
      eulerphi(4) = 2

      > Instead, I found two new possible candidate factors:
      > 71757331
      > 152555243

      Not good factors, according to my tests.

      David
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