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Old 2020-04-27, 17:24   #3631
sweety439
 
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Quote:
Originally Posted by kar_bon View Post
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
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Old 2020-04-27, 19:03   #3632
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Quote:
Originally Posted by dannyridel View Post
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 View Post
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.
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Old 2020-04-27, 19:21   #3633
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Ian and I have completed S887 to n=300K; no primes were found for n=200K-300K; 2 k's still remain; base released.
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Old 2020-04-28, 18:49   #3634
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S656 tested to n=300k (100-300k)

1 prime found, 6 remain

Results emailed - Base released
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Old 2020-04-30, 15:22   #3635
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Reserving R831 as new base using the new-base script up to 2.5k and sieving to 10k (1G) with srsieve2
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Old 2020-05-01, 08:23   #3636
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S628 tested to n=300k (100-300k)

1 prime found, 7 remain

Results emailed - Base released
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Old 2020-05-01, 10:08   #3637
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Reserving S832 to n=300k (100-300k) for BOINC
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Old 2020-05-01, 10:39   #3638
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Quote:
Originally Posted by rebirther View Post
Reserving S832 to n=300k (100-300k) for BOINC

I'm assuming you mean S837.
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Old 2020-05-03, 15:43   #3639
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R831 tested to n=2.5k + sieved to 1G (2.5-10k)

25415 remain

Results emailed - Base released
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Old 2020-05-03, 15:44   #3640
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Reserving R886 as new base using the new-base script up to 2.5k and sieving to 10k (1G) with srsieve2
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Old 2020-05-07, 19:30   #3641
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R886 tested to n=2.5k + sieved to 1G (2.5-10k)

29469 remain

Results emailed - Base released
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