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3738Re: [PrimeNumbers] gen fermat b=10

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  • Nathan Russell
    Nov 2, 2001
      On Sat, 3 Nov 2001 11:26:10 +0800, "MICHAEL HARTLEY"
      <Michael.Hartley@...> wrote:

      >
      >Dear All,
      >
      >Are there any primes of the form 10^(2^k)+1 known for k>1 ?
      >
      >Yours, Mike H...

      Yves' page says none through k=20; note that k=21 is reserved to be
      tested under the alias (10^2)^(2^19)

      (Unless Proth specifically avoids testing bases which are perfect
      squares, which I behavior I didn't observe with Proth 6.7).

      Nathan
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