PRPnet 1st drive-R/S base 2 even-k/even-n/odd-n - Page 14

gd_barnes · 2011-06-02, 16:08

Quote:

Originally Posted by MyDogBuster

Here it is:

20049*2^1687252-1 is prime

Just submitted it to the good professor.

Another one over 500K digits (507918). We are on a serious roll here.

OUSTANDING!! Congrats Ian! This also knocks out k=20049 for bases R4 and R16.

This shatters 2 records for the project:

Largest 3 primes found in 2 days!

4 of the top 5 primes found in 5 days!

Amazing.

mdettweiler · 2011-06-03, 04:14

Quote:

Originally Posted by MyDogBuster

Here it is:

20049*2^1687252-1 is prime

Just submitted it to the good professor.

Another one over 500K digits (507918). We are on a serious roll here.

Most interesting--a prime (pardon the pun) example of a "prime bunch" there.

Congratulations on an awesome find!

Lennart · 2011-07-08, 13:20

85287*2^1890011+1 is Prime

mdettweiler · 2011-07-09, 18:43

Just to give everyone a heads-up: I will be out of town with semi-limited internet access for the next week at a family reunion. See this post over in the NPLB forum for more details. At the rate we're processing on port 1300, I'd estimate a good chance that it will dry out sometime while I'm away. Since we haven't yet decided on what to do next for this mini-drive, I'm unable to pre-stock the server with adequate work to last out the week; if a decision is reached before 2 AM or so tonight, I should be able to get it loaded before I leave, but otherwise I can't make any promises. I'm pretty sure I'll be able to load the server from my laptop while away, unless the job involves tricky sorting-out of sieve files (like the current base 2 batch did), but it may have to wait until the second half of the week because my laptop will be busy serving another purpose initially. (Long story--actually kind of a humorous one but it's rather too long to put in this decidedly unrelated thread.

)

Lennart · 2011-07-09, 19:14

I have to move my core later today so I think there will be work for some more days.

Lennart

gd_barnes · 2011-07-18, 04:48

Moved the discussion about a new PRPnet server to a separate thread at http://www.mersenneforum.org/showthread.php?t=15785.

mdettweiler · 2011-07-29, 21:37

Squeaked in one (likely) last prime before n=2M:

148323*2^1973319-1 is prime!

This knocks out k=148323 for R2 odd-n, and is currently the 3rd largest prime found by CRUS. (And it's far and away my largest personal find!

)

Now wouldn't it be really something if we found another one before 2M...

Max

MyDogBuster · 2011-07-29, 22:02

Yea Max. Nice find. Everything seems to come in pairs or triplets lately so there is one or two due.

gd_barnes · 2011-07-29, 23:42

Quote:

Originally Posted by mdettweiler

Squeaked in one (likely) last prime before n=2M:

148323*2^1973319-1 is prime!

This knocks out k=148323 for R2 odd-n, and is currently the 3rd largest prime found by CRUS. (And it's far and away my largest personal find!

)

Now wouldn't it be really something if we found another one before 2M...

Max

NICE!!

Lennart · 2011-08-08, 21:36

I added some core on it so I hope they are done to 2M tomorrow.

Lennart

gd_barnes · 2011-08-10, 06:54

The drive is complete to n=2M.

Substantial sieving is needed for testing > 2M and there are several additional k's that will be added. It will be a while before such an effort is started.

2011-07-09, 18:43	#147
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 3·2,083 Posts	Just to give everyone a heads-up: I will be out of town with semi-limited internet access for the next week at a family reunion. See this post over in the NPLB forum for more details. At the rate we're processing on port 1300, I'd estimate a good chance that it will dry out sometime while I'm away. Since we haven't yet decided on what to do next for this mini-drive, I'm unable to pre-stock the server with adequate work to last out the week; if a decision is reached before 2 AM or so tonight, I should be able to get it loaded before I leave, but otherwise I can't make any promises. I'm pretty sure I'll be able to load the server from my laptop while away, unless the job involves tricky sorting-out of sieve files (like the current base 2 batch did), but it may have to wait until the second half of the week because my laptop will be busy serving another purpose initially. (Long story--actually kind of a humorous one but it's rather too long to put in this decidedly unrelated thread. ) Last fiddled with by mdettweiler on 2011-07-09 at 18:45

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2011-07-08, 13:20	#146
Lennart "Lennart" Jun 2007 2⁵·5·7 Posts	85287*2^1890011+1 is Prime

2011-07-09, 19:14	#148
Lennart "Lennart" Jun 2007 10001100000₂ Posts	I have to move my core later today so I think there will be work for some more days. Lennart

2011-07-18, 04:48	#149
gd_barnes May 2007 Kansas; USA 101·103 Posts	Moved the discussion about a new PRPnet server to a separate thread at http://www.mersenneforum.org/showthread.php?t=15785.

2011-07-29, 21:37	#150
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 3×2,083 Posts	Squeaked in one (likely) last prime before n=2M: 148323*2^1973319-1 is prime! This knocks out k=148323 for R2 odd-n, and is currently the 3rd largest prime found by CRUS. (And it's far and away my largest personal find! ) Now wouldn't it be really something if we found another one before 2M... Max

2011-07-29, 22:02	#151
MyDogBuster May 2008 Wilmington, DE 5444₈ Posts	Yea Max. Nice find. Everything seems to come in pairs or triplets lately so there is one or two due.

2011-08-08, 21:36	#153
Lennart "Lennart" Jun 2007 1120₁₀ Posts	I added some core on it so I hope they are done to 2M tomorrow. Lennart

2011-08-10, 06:54	#154
gd_barnes May 2007 Kansas; USA 101·103 Posts	The drive is complete to n=2M. Substantial sieving is needed for testing > 2M and there are several additional k's that will be added. It will be a while before such an effort is started.