A023394 and the smallest undiscovered Fermat factor

PFOERTNER, Hugo Hugo.Pfoertner at muc.mtu.de
Fri Jul 7 15:27:43 CEST 2006

-----Original Message-----
From: David Wilson [mailto:davidwwilson at comcast.net] 
Sent: Friday, July 07, 2006 14:52
To: Max A.; seqfan at ext.jussieu.fr
Subject: Re: A023394 and the smallest undiscovered Fermat factor

When I created A023394, I got my list of Fermat divisors from the web
cited on the sequence, and confirmed completeness up to a(19) using a 
straightforward modular test.

I do not know if anyone maintains an official list of Fermat divisors,
do I know of any rigorous bounds on the completeness of such a list
what I have established for A023394.


An up-to-date status of Fermat divisors is maintained on Wilfrid
Keller's page



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