20210724, 00:03  #1035  
Jun 2012
Boulder, CO
425_{10} Posts 
Quote:


20210724, 21:37  #1036 
"Gary"
May 2007
Overland Park, KS
2^{2}·3,011 Posts 
k=21 is complete to n=3.5M; 1 prime found for n=2.89M3.5M.
k=21 doublecheck is complete for n=1M2.89M; 5 primes confirmed. The k is released. Primes and results attached. 
20210727, 21:52  #1037 
"Erling B."
Dec 2005
150_{8} Posts 
k=83 at n=3.6M and continuing

20210909, 15:30  #1038 
"W. Byerly"
Aug 2013
81*2^31743531
7·19 Posts 
k=55 at n=3.45m.

20210927, 15:30  #1039 
"W. Byerly"
Aug 2013
81*2^31743531
7·19 Posts 
Reserving k=21 from 3.5m
Building a new computer (Ryzen 5950x) on Friday excited to get it crunching! 
20211001, 11:50  #1040 
Mar 2007
Estonia
225_{8} Posts 
ongoing progress report:
k=193 at n=5M k=195 at n=5M k=197 at n=5M 
20211021, 23:53  #1041 
"W. Byerly"
Aug 2013
81*2^31743531
7×19 Posts 
In contact with ryanp as it seems he was working on k=21 before me. Reserving k= 81 instead.

20211021, 23:58  #1042 
Sep 2006
The Netherlands
3·269 Posts 
k=81 might be a good one! Good luck! (had told Paul to jump on it  too late now!)
Last fiddled with by diep on 20211021 at 23:59 
20211022, 02:11  #1043 
"W. Byerly"
Aug 2013
81*2^31743531
7×19 Posts 
after speaking with ryanp he completed k= 21 from n=67m. I'll keep k=21 reserved along with k=81.
k=55 at n= 3.52m. Only time will tell ;) Last fiddled with by Trilo on 20211022 at 02:17 
20211111, 01:08  #1044 
May 2009
Moscow, Russia
5556_{8} Posts 
Status update:
k=29 @ 7M k=253 @ 6.2M 
20211114, 12:11  #1045 
"Erling B."
Dec 2005
2^{3}·13 Posts 
k=83 at n=3.7M and continuing.

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Riesel base 3 reservations/statuses/primes  KEP  Conjectures 'R Us  1140  20221226 17:36 
Proth and Riesel Primes  lukerichards  Number Theory Discussion Group  7  20180120 16:47 
Riesel primes  Primeinator  Information & Answers  12  20090719 23:30 
Sierpinski/Riesel Base 5: Post Primes Here  robert44444uk  Sierpinski/Riesel Base 5  358  20081208 16:28 
Riesel.15k.org LLRnet Primes Found!  SlashDude  15k Search  3  20040614 16:07 