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20962Re: super_pseudoprime

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  • djbroadhurst
    Sep 30, 2009
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      --- In primenumbers@yahoogroups.com,
      Lio David <maths_forall@...> chose to define:

      > A super-pseudoprime (to base b) is a pseudoprime to base b whose
      > composite divisors are again pseudoprimes to base b, and which is
      > not a semiprime

      > A super-Poulet number is a Poulet number whose
      > every divisor d divides 2^d - 2.

      It follows that every Super Poulet that is not a semiprime
      is *indeed* a super-pseudoprime in base 2.

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