Hi, the now largest Chen prime is referenced in: http://groups.yahoo.com/group/primenumbers/message/17008 No news from the e-group about a Chen prime. I wonder...
... After preliminary trial factoring to 10^6 there are 3108 unassigned Chen candidates from 103k to 110k. I don't know how many assigned candidates remain to...
We completed primality proof of 11109-digit generalized repunit (127^5281-1)/126 http://primes.utm.edu/primes/page.php?id=75523 using a script written by John...
Good work, gentlemen. The timing (220 mins) for only 27,78% is also quite good. This opens new possibilities. I understand that Chris accepts CHG proofs in his...
... At least until I hear of problem with the approach. I would indeed feel more comfortable if a third party verify existed! Why do you ask, do you se a...
... I am /greatly/ impressed by the depth of factoring. After the GRU was posted, I ran ECM up to p35 and obtained only 24.399% of the digits of N-1, with a...
No, no problem. David and I discussed the engine last weekend when he was in Holland and everything looks fine. A verifier would be handy though. But there...
Thank you all for your kind comments. In anybody has a number they would like to try CHG on, I would encourage it. I need as many test cases as I can get to...
... Bouk and I have a prp26768 at 29.437% and Bouk recently found a prp27028 that he is actively trying to push above 28%. I am far off axis, deep in the...
Dear People, David Broadhurst and I have recently proven a new Non-trivial Gigantic primerecord with 31034 digits. It's the Generalized Lucas primitive part...
Hi, congrats to Tom Wu for another generalised rep-digit with 3821 base-2963 digits: http://primes.utm.edu/primes/page.php?id=75630 Further congrats to Bouk...
... Oops. I meant CH3 not x25. Also I really meant "not so non-trivial". I discovered the factored percentage in your link for the number on the submission...
... CHG on Phi(3821,2963) took about 80 hours on my Athlon XP. The proof was assisted by two PrP helpers, Phi(1910,2963), weighing in at about 20% of N-1, and...
... Precisely, sir. ... About half an hour, as I recall. Makes up for the GHz-years of p45 to p50 work that we had already done to get there. Note that this...
... Not only that, David has a left point modification which would reduce the CHG step to practically nothing. It's on my todo list. Moral of the story: If...
Hi, I am wondering if Andy Steward is contactable. I recall that he was heating his flat with a "farm" of Athlons working on a (NTG) GRU. Would this wonderful...
I do not see how Pfgw is supposed to prove http://primes.utm.edu/primes/page.php?id=75678 The cyclotomy of N+1 seems to be far too poor. Am I missing...
David, OpenPFGW have been used to prove the 3-PRP status of this number.. What is exactly your point ?? Faysal _____ From: primeform@yahoogroups.com...
... I believe his point is this. 3-PRP is NOT a proof of primality. Try this one for instance: pfgw -f0 -q703 PFGW Version 20050428.Win_Dev (Alpha/IBDWT...
Jim, Yes I got the point. I Thanks _____ From: primeform@yahoogroups.com [mailto:primeform@yahoogroups.com] On Behalf Of jim_fougeron Sent: Thursday, September...
Dear all, I would like to announce a new prime of 28699 digits. For Jim, David and Jens: This is not a PRP only this time. Primality prove using OpenPFGW ...
... proof) ... http://www.prothsearch.net/riesel.html reveals that this form (7*2^n+1) has been tested to 1.6M bits. Your number is listed already. ...
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