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From: bs@faron.UUCP (Robert D. Silverman)
Newsgroups: net.math
Subject: palindromic primes
Message-ID: <164@faron.UUCP>
Date: Mon, 19-Nov-84 13:04:16 EST
Article-I.D.: faron.164
Posted: Mon Nov 19 13:04:16 1984
Date-Received: Tue, 20-Nov-84 06:55:20 EST
Organization: The MITRE Corp., Bedford, Ma.
Lines: 10


	Currently, the largest known palindromic prime is R1031, which
	is (10^1031-1)/9. It is a string of 1031 ones. It was just recently
	proved prime by Hugh Williams at the University of Manitoba. The
	proof utilised a recent factorization by Atkins and Rickert at 
	the Univerisity of Illinois of 10^103+1. It has been known to be
	a probable prime for quite some time. R317 is also prime.