Message 1134 from Yahoo.Groups.Primeform

Return-Path: <chris_nash@...> X-Sender: chris_nash@... X-Apparently-To: Received: (EGP: mail-6_2_0); 26 Oct 2000 23:23:47 -0000 Received: (qmail 21610 invoked from network); 26 Oct 2000 23:23:47 -0000 Received: from unknown ( by with QMQP; 26 Oct 2000 23:23:47 -0000 Received: from unknown (HELO ( by mta2 with SMTP; 26 Oct 2000 23:23:47 -0000 Received: from ( []) by (8.10.1/8.10.1) with SMTP id e9QNNjZ178440 for <>; Thu, 26 Oct 2000 19:23:45 -0400 Message-Id: <200010262323.e9QNNjZ178440@...> To: Subject: Re: [primeform] R86453 is PRP Date: Thu, 26 Oct 2000 19:20:26 EDT MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Reply-To: chris_nash@... X-Mailer: BeOS Mail From: "Chris Nash" <chris_nash@...>
Hi folks >I used pfgw to show that the repunit R86453 = (10^86453-1)/9 is a >probable prime. Congratulations to Lew Baxter on this fantastic result! I must have had a premonition, I recently added the repunit function R to pfgw (although I am holding out a little since the N-1 test is also near completion). In addition, I've now added variable bases to pfgw as well. >Would anyone wish to verify this? crnash$ echo "R(86453)" >r86453.txt crnash$ pfgw -b17 r86453.txt is running right now, all 287187 iterations of it.... I can't promise a result too quickly, since I'm also N-1 testing Phi(2521,402) *and* looking for a new (and completely unrelated) record, all on one processor :) It's going to be difficult, if not impossible, to factor N-1 for this one, 86453-1 really doesn't factor too well! Chris
Message 1128 Message 1132 Message 1133 Message 1139 Message 1140 Message 1141 Message 1142 Message 1143 Message 1144