Message 10253 from Yahoo.Groups.Primeform
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Date: Tue, 06 Apr 2010 15:05:26 -0000
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From: "ericwweisstein" <eric@...>
Subject: New reverse consecutive integer (probable) prime with 177,719 digits
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After ~12 years of on-and-off searching using spare CPU cycles, it seems I've found only the second known reverse consecutive integer (probable) prime. And it's a big one:

37765 37764 37763 ... 5 4 3 2 1

(spaces denote concatenation here; not multiplication) with 177719 decimal digits. The only previously known such prime was the 155-digit number:

82 81 80 ... 5 4 3 2 1

I've updated MathWorld and will submit to OEIS and "Henri & Renaud Lifchitz's PRP Top records" site (where it looks like it will be #40).

-Eric