Sierpinski/Riesel Base 5: Post Primes Here - Page 30

michaf · 2007-07-08, 20:26

Gee!!

Gogogo!

masser · 2007-07-16, 02:09

This one had a high weight: 1027 - so this find should remove a large number of tests from the dat file.

tnerual · 2007-08-05, 23:41

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 · 2007-08-13, 17:19

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+

masser · 2007-08-17, 22:53

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.

tnerual · 2007-08-19, 21:48

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 !

ltd · 2007-08-20, 17:42

Looking at the stas we can see that we have reached a new small milestone with this latest finding.

We are now below 3 Million untested values in the riesel queue.

tnerual · 2007-09-15, 19:42

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

masser · 2007-09-24, 16:39

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.

birdman2584 · 2007-09-24, 16:50

congrats!

axn · 2007-09-26, 04:46

Quote:

Originally Posted by masser

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.

The prover code doesn't credit the project or srsieve

2007-07-16, 02:09	#321
masser Jul 2003 wear a mask 2×761 Posts	*1190985^193933-1 is prime!** This one had a high weight: 1027 - so this find should remove a large number of tests from the dat file.

2007-08-05, 23:41	#322
tnerual Oct 2006 7×37 Posts	*1672465^195250-1 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: 1672465^195250-1 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 Last fiddled with by tnerual on 2007-08-05 at 23:44*

2007-08-17, 22:53	#324
masser Jul 2003 wear a mask 2762₈ Posts	*2130565^195968-1** 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.

2007-09-15, 19:42	#327
tnerual Oct 2006 7×37 Posts	once again it's me 1550565^199913-1 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 Last fiddled with by tnerual on 2007-09-15 at 19:44*

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Sierpinski and Riesel number (Fixed k, Variable base)	Citrix	Sierpinski/Riesel Base 5	16	2017-02-09 15:55
Definition of Sierpinski/Riesel number base b	sweety439	Conjectures 'R Us	32	2016-12-16 22:31
Sierpinski/Riesel Base 10	rogue	Conjectures 'R Us	11	2007-12-17 05:08
Sierpinski / Riesel - Base 23	michaf	Conjectures 'R Us	2	2007-12-17 05:04
Sierpinski / Riesel - Base 22	michaf	Conjectures 'R Us	49	2007-12-17 05:03

2007-07-08, 20:26	#320
michaf Jan 2005 737₈ Posts	Gee!! Gogogo!

2007-08-20, 17:42	#326
ltd Apr 2003 2²·193 Posts	Looking at the stas we can see that we have reached a new small milestone with this latest finding. We are now below 3 Million untested values in the riesel queue.

2007-09-24, 16:39	#328
masser Jul 2003 wear a mask 2×761 Posts	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.

2007-09-24, 16:50	#329
birdman2584 Nov 2006 Louisville, KY 33₈ Posts	congrats!