[seqfan] FYI - extending A134753

[Alexander Povolotsky]

From:"Luis H. Gallardo" <Luis.Gallardo at UNIV-BREST.FR>
To:NMBRTHRY at LISTSERV.NODAK.EDU
Subject:exponential primes
Date:Wed, Mar 04, 2009 02:26 PM
Hello,
I am computing integers r such that
p = 3^(4r-1) +2
is prime
((extending A134753))
computer is actually around r=39541;
but I have a "hole" just for one lower value
of r,
namely for
r= 38998
I got:
luisgall:~> maple: fatal error, lost connection to kernel
[1]+  Exit 5                  maple <formakowskiX3C >makowskiX3C
luisgall:~>
((after, probably, at least two hours of computation))
(("isprime", cmaple11, linux machine, 8 processors))
somebody can help ?
cordially,
luis