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2020-04-27, 17:24   #3631
sweety439

Nov 2016

37·61 Posts

Quote:
 Originally Posted by kar_bon 9*990^23031-1 was found by Gary on 2019-06-07, see here. k*b^n-1 was tested there for k<=12, b<=1030 and n<=25k for a different purpose, not CRUS.
This is already done to n=100K, see post https://mersenneforum.org/showpost.p...&postcount=104 betrig

also k=b-1 and b+1 done to n=100K, see https://www.rieselprime.de/ziki/Williams_prime

2020-04-27, 19:03   #3632
gd_barnes

May 2007
Kansas; USA

2·36·7 Posts

Quote:
 Originally Posted by dannyridel Really? On this page R990 isn't even existent
R990 is complete to n=2500 as shown on the main page. It will not show up on the page that you linked here unless I list all of the k's remaining. I do not list k's remaining unless a base has been tested to n>=10K.

Quote:
 Originally Posted by kar_bon 9*990^23031-1 was found by Gary on 2019-06-07, see here. k*b^n-1 was tested there for k<=12, b<=1030 and n<=25k for a different purpose, not CRUS.
I missed removing that one and showing its prime when Reb reported completion of R990 to n=2500. It is now removed from the sieve file and the prime is shown.

 2020-04-27, 19:21 #3633 gd_barnes     May 2007 Kansas; USA 2×36×7 Posts Ian and I have completed S887 to n=300K; no primes were found for n=200K-300K; 2 k's still remain; base released.
 2020-04-28, 18:49 #3634 rebirther     Sep 2011 Germany 46358 Posts S656 tested to n=300k (100-300k) 1 prime found, 6 remain Results emailed - Base released
 2020-04-30, 15:22 #3635 rebirther     Sep 2011 Germany 23×107 Posts Reserving R831 as new base using the new-base script up to 2.5k and sieving to 10k (1G) with srsieve2
 2020-05-01, 08:23 #3636 rebirther     Sep 2011 Germany 46358 Posts S628 tested to n=300k (100-300k) 1 prime found, 7 remain Results emailed - Base released
 2020-05-01, 10:08 #3637 rebirther     Sep 2011 Germany 23×107 Posts Reserving S832 to n=300k (100-300k) for BOINC
2020-05-01, 10:39   #3638
gd_barnes

May 2007
Kansas; USA

2×36×7 Posts

Quote:
 Originally Posted by rebirther Reserving S832 to n=300k (100-300k) for BOINC

I'm assuming you mean S837.

 2020-05-03, 15:43 #3639 rebirther     Sep 2011 Germany 23·107 Posts R831 tested to n=2.5k + sieved to 1G (2.5-10k) 25415 remain Results emailed - Base released
 2020-05-03, 15:44 #3640 rebirther     Sep 2011 Germany 23×107 Posts Reserving R886 as new base using the new-base script up to 2.5k and sieving to 10k (1G) with srsieve2
 2020-05-07, 19:30 #3641 rebirther     Sep 2011 Germany 23·107 Posts R886 tested to n=2.5k + sieved to 1G (2.5-10k) 29469 remain Results emailed - Base released

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