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23045Re: [PrimeNumbers] A PRP of the form 2*k*p +1

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  • Mark Rodenkirch
    Sep 1, 2011
      On Sep 1, 2011, at 5:22 AM, Peter Lesala wrote:
      > Keen to find prime factors of 2^333019 - 1, I went on to test 2*k*p
      > + 1 for k = 10^100000. The test gives
      >
      > 2*(10^100000 + 50617) + 1 as a probable prime of 100006 digits;
      > using Primeform.
      >
      primeform? That's ancient. I presume you mean pfgw.

      --Mark
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