S/R Base 5 Primes reported in 2017+ - Page 2

rudy235 · 2019-06-21, 23:15

https://primes.utm.edu/primes/page.php?id=126564

88444 · 5^2799269 - 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.

pepi37 · 2019-06-25, 08:07

And another hit :)

https://primes.utm.edu/primes/page.php?id=126585

322498 · 52800819 - 1 is prime :)

LaurV · 2019-06-27, 05:37

Quote:

Originally Posted by pepi37

322498 · 52800819 (sic) - 1 is prime :)

That is divisible by 7

gd_barnes · 2019-06-27, 07:56

Pepi,

Please use the exponentiation symbol. Thanks.

rudy235 · 2019-06-27, 22:17

Quote:

Originally Posted by gd_barnes

Pepi,

Please use the exponentiation symbol. Thanks.

I never fail to do that,

pepi37 · 2020-03-05, 21:05

And new hit in SR5... prime will be verified soon :)

https://primes.utm.edu/primes/page.php?id=130732

axn · 2020-03-10, 09:50

Apparently there is another one?

https://primes.utm.edu/primes/page.php?id=130751

146264*5^2953282-1

JeppeSN · 2020-03-14, 10:25

And the third one of this month: 238694*5^2979422 - 1

https://primes.utm.edu/primes/page.php?id=130771

/JeppeSN

JeppeSN · 2020-03-19, 19:53

Fourth one, 207494*5^3017502 - 1.

https://primes.utm.edu/primes/page.php?id=130783

/JeppeSN

kar_bon · 2020-05-04, 21:45

Seems this was not reported here yet:

118568 * 5^3112069+1 is prime, found on 2020-05-01

2020-03-05, 21:05	#17
pepi37 Dec 2011 After milion nines:) 3×463 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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
S/R Base 5 Primes reported in 2016	Joe O	Sierpinski/Riesel Base 5	5	2016-08-21 17:47
S/R Base 5 Primes reported in 2015	Joe O	Sierpinski/Riesel Base 5	3	2016-03-14 04:35
S/R Base 5 Primes reported in 2014	Joe O	Sierpinski/Riesel Base 5	1	2016-03-14 04:30
S/R Base 5 Primes reported in 2012	odicin	Sierpinski/Riesel Base 5	16	2013-01-09 20:18
S/R Base 5 Primes reported in 2011	Joe O	Sierpinski/Riesel Base 5	16	2011-12-05 09:17

2019-06-21, 23:15	#12
rudy235 Jun 2015 Vallejo, CA/. 2·5·97 Posts	https://primes.utm.edu/primes/page.php?id=126564 88444 · 5^2799269 - 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:) 2555₈ Posts	And another hit :) https://primes.utm.edu/primes/page.php?id=126585 322498 · 52800819 - 1 is prime :)

2019-06-27, 07:56	#15
gd_barnes May 2007 Kansas; USA 19·541 Posts	Pepi, Please use the exponentiation symbol. Thanks.

2020-03-10, 09:50	#18
axn Jun 2003 2·3²·269 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 164₁₀ 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 164₁₀ 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 2866₁₀ Posts	Seems this was not reported here yet: 118568 * 5^3112069+1 is prime, found on 2020-05-01