[seqfan] Re: Existed such number ?

[Tanya Khovanova]

A083737 Pseudoprimes to bases 2,3 and 5. 

--- Artur <grafix at csl.pl> wrote:

> Dear Seqfans,
> 
> Who can to find number k such 2^k-2 and 3^k-3 and 5^k-5 is divisable
> by 
> k and k isn't 1 or Carmichael number A002997.
> 
> Best wishes
> Artur
> 
> 
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