Message 10769 from Yahoo.Groups.Primeform
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Date: Thu, 25 Nov 2010 03:31:09 -0000
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From: "darren_bedwell" <darren.bedwell@...>
Subject: Thanksgiving Eve near-repdigit palindrome
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X-eGroups-Approved-By: callipse2003 <chris_nash@...> via email; 25 Nov 2010 03:53:47 -0000

Record near-repdigit palindrome primes have been popping up for me at one per
month for three months. This started after I finally wrote a proper sieve
for them. The previous one turned up on All Hallows' Eve, now this one on
the eve of Thanksgiving Day (as we observe it in the U.S.A.):

PFGW Version 3.3.4.20100405.x86_Stable [GWNUM 25.14]
Primality testing 10^134809-10^67404-1 [N+1, Brillhart-Lehmer-Selfridge]
Running N+1 test using discriminant 7, base 1+sqrt(7)
Calling Brillhart-Lehmer-Selfridge with factored part 34.95%
10^134809-10^67404-1 is prime! (4302.1174s+0.0339s)