mersenneforum.org S/R Base 5 Primes reported in 2017+
 Register FAQ Search Today's Posts Mark Forums Read

 2019-06-21, 23:15 #12 rudy235     Jun 2015 Vallejo, CA/. 3×383 Posts https://primes.utm.edu/primes/page.php?id=126564 88444 · 52799269 - 1 1956611 digits Jun 2019 It is the largest SR5 prime and the third largest prime of 2019 it eliminates k=88444 from the base 5 Reisel Problem.
 2019-06-25, 08:07 #13 pepi37     Dec 2011 After milion nines:) 110010110002 Posts And another hit :) https://primes.utm.edu/primes/page.php?id=126585 322498 · 52800819 - 1 is prime :)
2019-06-27, 05:37   #14
LaurV
Romulan Interpreter

"name field"
Jun 2011
Thailand

282916 Posts

Quote:
 Originally Posted by pepi37 322498 · 52800819 (sic) - 1 is prime :)
That is divisible by 7

 2019-06-27, 07:56 #15 gd_barnes     "Gary" May 2007 Overland Park, KS 2×5,927 Posts Pepi, Please use the exponentiation symbol. Thanks.
2019-06-27, 22:17   #16
rudy235

Jun 2015
Vallejo, CA/.

21758 Posts

Quote:
 Originally Posted by gd_barnes Pepi, Please use the exponentiation symbol. Thanks.
I never fail to do that,

 2020-03-05, 21:05 #17 pepi37     Dec 2011 After milion nines:) 23×7×29 Posts And new hit in SR5... prime will be verified soon :) https://primes.utm.edu/primes/page.php?id=130732 Last fiddled with by pepi37 on 2020-03-05 at 21:07
 2020-03-10, 09:50 #18 axn     Jun 2003 2×2,719 Posts Apparently there is another one? https://primes.utm.edu/primes/page.php?id=130751 146264*5^2953282-1
 2020-03-14, 10:25 #19 JeppeSN     "Jeppe" Jan 2016 Denmark 5·37 Posts And the third one of this month: 238694*5^2979422 - 1 https://primes.utm.edu/primes/page.php?id=130771 /JeppeSN
 2020-03-19, 19:53 #20 JeppeSN     "Jeppe" Jan 2016 Denmark 18510 Posts Fourth one, 207494*5^3017502 - 1. https://primes.utm.edu/primes/page.php?id=130783 /JeppeSN
 2020-05-04, 21:45 #21 kar_bon     Mar 2006 Germany BBB16 Posts Seems this was not reported here yet: 118568 * 5^3112069+1 is prime, found on 2020-05-01
 2022-02-18, 22:12 #22 rudy235     Jun 2015 Vallejo, CA/. 114910 Posts Moderators: I am not too sure if this is the right (or best) thread to post this but please move it if required. A new Sierpinski/Riesel Base 5 has been found (verification pending) #23 in the list currently 3622 · 57558139 - 1 5282917 Digits L4965 (Ryan Propper) Feb 2022 This eliminates the smallest k in the list =3622 Riesel base 5 Congratulations to Ryan Propper. Last fiddled with by rudy235 on 2022-02-18 at 22:27

 Similar Threads Thread Thread Starter Forum Replies Last Post Joe O Sierpinski/Riesel Base 5 5 2016-08-21 17:47 Joe O Sierpinski/Riesel Base 5 3 2016-03-14 04:35 Joe O Sierpinski/Riesel Base 5 1 2016-03-14 04:30 odicin Sierpinski/Riesel Base 5 16 2013-01-09 20:18 Joe O Sierpinski/Riesel Base 5 16 2011-12-05 09:17

All times are UTC. The time now is 04:24.

Wed Feb 8 04:24:31 UTC 2023 up 174 days, 1:53, 1 user, load averages: 0.99, 0.77, 0.75