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Old 2020-02-06, 12:49   #1926
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Quote:
Originally Posted by pepi37 View Post
What was last prime in that sequence?
Code:
-----  -------------------------------- ------- ----- ---- --------------
 rank           description              digits  who year comment
-----  -------------------------------- ------- ----- ---- --------------
  673  69*2^3140225-1                    945304 L3764 2014 
  696  69*2^3097340-1                    932395 L3764 2014 
 1004  69*2^2649939-1                    797713 L3764 2014 
-----  -------------------------------- ------- ----- ---- --------------
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Old 2020-02-08, 00:34   #1927
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Quote:
Originally Posted by VBCurtis View Post
You should use the "post small primes... here" thread for primes smaller than the top-5000 list cutoff, presently in the vicinity of 2^1.4M...
Curious. Where is the top 5000 list?
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Old 2020-02-08, 02:12   #1928
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Quote:
Originally Posted by storm5510 View Post
Curious. Where is the top 5000 list?
https://primes.utm.edu/primes/home.php
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Old 2020-02-08, 15:54   #1929
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Quote:
Originally Posted by paulunderwood View Post
Bookmarked. Thank you!
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Old 2020-02-19, 19:51   #1930
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25*2^5152151-1 is prime! (1550954 decimal digits) - I've just noticed that previous prime for this k was reported by me 11+ years ago.

Last fiddled with by Cruelty on 2020-02-19 at 20:00
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Old 2020-02-19, 20:07   #1931
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Quote:
Originally Posted by storm5510 View Post
I would like to take a look at these. I will look around for them.
There is no point in sieving k*2^n-1 sequences for k<10000, as there are sieve files ready and waiting, read more about it here
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Old 2020-02-19, 23:01   #1932
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Quote:
Originally Posted by Cruelty View Post
25*2^5152151-1 is prime! (1550954 decimal digits) - I've just noticed that previous prime for this k was reported by me 11+ years ago.
Congrats! Have you been testing k=25 for a solid 11 years, or instead picked it up again recently?
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Old 2020-02-19, 23:14   #1933
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Quote:
Originally Posted by Cruelty View Post
25*2^5152151-1 is prime! (1550954 decimal digits) - I've just noticed that previous prime for this k was reported by me 11+ years ago.
There is a k = 25 entry in the new Wiki Riesel Prime database. It is unassigned. The last update was in 2014. Perhaps you could claim it and bring it up-to-date?
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Old 2020-02-19, 23:30   #1934
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Quote:
Originally Posted by paulunderwood View Post
Congrats! Have you been testing k=25 for a solid 11 years, or instead picked it up again recently?
Solid 11 years This is quite "heavy" k.
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Old 2020-02-19, 23:32   #1935
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Quote:
Originally Posted by storm5510 View Post
There is a k = 25 entry in the new Wiki Riesel Prime database. It is unassigned. The last update was in 2014. Perhaps you could claim it and bring it up-to-date?
The most up-to-date reservations and statuses are available on mersenneforum.org, and other lists like rieselprime.de or 15k.org are outdated.
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Old 2020-02-20, 09:31   #1936
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Correct. The rieselprime pages (RPPDb) I won't update anymore. I've only taken the data from there into the Wiki by now, but the next aim is to update all missing primes and current reservations from this forum.
I know the problem to update pages for prime collections like RPPDb or 15k.org: the Wiki got the advantage that every logged in user can reserve and update any k-value by themselves including the history, only an admin has to cofirm the changes.
To set up the new data will take some time and I see the need to make a note in the Wiki about this: no current data yet.
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