mersenneforum.org  

Go Back   mersenneforum.org > Prime Search Projects > Sierpinski/Riesel Base 5

Closed Thread
 
Thread Tools
Old 2007-03-27, 20:43   #34
tnerual
 
tnerual's Avatar
 
Oct 2006

7·37 Posts
Default

22966*5^181907-1 is prime !

http://primes.utm.edu/primes/page.php?id=79853

rank: 1283
tnerual is offline  
Old 2007-04-01, 12:37   #35
birdman2584
 
birdman2584's Avatar
 
Nov 2006
Louisville, KY

33 Posts
Default

193084*5^182187-1 Is Prime!
birdman2584 is offline  
Old 2007-05-26, 19:24   #36
masser
 
masser's Avatar
 
Jul 2003
wear a mask

1,433 Posts
Default

After a long drought, birdman has found our latest prime:

47126*5^187554-1 is prime!

regards,
masser
masser is offline  
Old 2007-07-05, 11:57   #37
masser
 
masser's Avatar
 
Jul 2003
wear a mask

101100110012 Posts
Default

93254*5^266111+1 is prime!
181754*5^192382-1 is prime!
119098*5^193933-1 is prime!

Last fiddled with by masser on 2007-07-16 at 02:23
masser is offline  
Old 2007-08-05, 23:41   #38
tnerual
 
tnerual's Avatar
 
Oct 2006

7×37 Posts
Default 167246*5^195250-1 is prime

a new one ...

i was doing the +1 since a while, i just switched 3 core to -1 one week ago and yeah a fabulous gift: a new prime:

167246*5^195250-1 is prime (around top 1250 in primelist)

it's a medium weight k (535) so it will remove around 20000 k/n pair from the sr5data file

let's go for a new one !

time to test : 5601.166 sec on a centrino-duo 1600Mhz
tnerual is offline  
Old 2007-08-13, 17:19   #39
tnerual
 
tnerual's Avatar
 
Oct 2006

7·37 Posts
Default

one more in the spotlight ...

31738*5^196001-1 is prime

137004 digit

place 1250 in top 5000

Quote:
LLR tests only k*2^n1 numbers, so, we will do a PRP test of 31738*5^196001-1
31738*5^196001-1 is a probable prime. Time: 4892.427 sec.
Please credit George Woltman's PRP for this result!
Result 31738/196001 succesfully sent to the server.
on my athlon 2500+

Last fiddled with by masser on 2007-08-14 at 17:14 Reason: We have another prime and dat file on the way... once birdman2584 checks his messages and/or result files...
tnerual is offline  
Old 2007-08-17, 22:53   #40
masser
 
masser's Avatar
 
Jul 2003
wear a mask

143310 Posts
Default 213056*5^195968-1

213056*5^195968-1 is prime!

birdman2584 must be on vacation - one of his machines found this prime on Monday and he hasn't posted it on the forum or responded to pm/email.

213056 is a fairly high weight sequence, so this find will shrink the dat file some and remove many candidates from the testing queue.

Last fiddled with by masser on 2007-08-17 at 22:53
masser is offline  
Old 2007-08-19, 21:48   #41
tnerual
 
tnerual's Avatar
 
Oct 2006

7·37 Posts
Default

a prime a week is my new way of life

127756*5^196729-1 is prime

Quote:
LLR tests only k*2^n1 numbers, so, we will do a PRP test of 127756*5^196729-1
Result 165452/196726 succesfully sent to the server.
127756*5^196729-1 is a probable prime. Time: 2976.169 sec.
Please credit George Woltman's PRP for this result!
on one core of my athlon X2-4200EE

more than 15000 k/n pair removed from the database !

edit: place 1250 as usual !
tnerual is offline  
Old 2007-09-15, 19:42   #42
tnerual
 
tnerual's Avatar
 
Oct 2006

10316 Posts
Default

once again it's me

155056*5^199913-1 is prime

about 13645 removed from dat file ...

new milestone reached :almost all riesel test are done up to 200k ... (24 to go)

place 1216 i think
tnerual is offline  
Old 2007-09-24, 16:39   #43
masser
 
masser's Avatar
 
Jul 2003
wear a mask

1,433 Posts
Default

After a long drought on the Sierpinski side,
...rover found that

5114*5^268127+1 is prime!

This was a nice find, as rover was slowly, but steadily, attacking the Sierpinski queue.
masser is offline  
Old 2007-10-06, 20:41   #44
tnerual
 
tnerual's Avatar
 
Oct 2006

7·37 Posts
Default

Code:
LLR tests only k*2^n±1 numbers, so, we will do a PRP test of 192908*5^202258-1
Result 289184/202248 succesfully sent to the server.
192908*5^202258-1 is a probable prime.  Time: 5582.395 sec.
Please credit George Woltman's PRP for this result!
one core of a centrino duo 1600 ...
tnerual is offline  
Closed Thread

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Next-gen Odroid announcement ewmayer Mlucas 116 2020-07-23 09:24
Nvidia announcement today: hohum ( yawn ) tServo GPU Computing 2 2018-03-27 20:38
GPU72 plans post-announcement garo GPU to 72 25 2013-03-04 10:11
Subscribing to announcement thread fetofs GMP-ECM 1 2006-05-30 04:32
Fourth known factor of M(M31) (preliminary announcement) ewmayer Operazione Doppi Mersennes 22 2005-07-06 00:33

All times are UTC. The time now is 16:39.

Fri Sep 25 16:39:47 UTC 2020 up 15 days, 13:50, 0 users, load averages: 1.10, 1.17, 1.40

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.