mersenneforum.org Twin prime search?
 Register FAQ Search Today's Posts Mark Forums Read

2007-04-26, 21:08   #111
MooooMoo
Apprentice Crank

Mar 2006

1110001102 Posts

Quote:
 Originally Posted by Joshua2 What percent chance that we will have found it by Sept 07? Is it around 50-50?
Assuming PG continues at the current rate of ~1.6G per month, we'll be at 14.5 G by the end of September. This means that the chance of finding a twin by Sept 07 will be 30%.

For a 50-50 chance, we'll have to LLR about 29G, which will happen sometime around during the summer of 2008.

2007-04-27, 09:06   #112
Terminal

Apr 2007

310 Posts

Quote:
 Originally Posted by MooooMoo Assuming PG continues at the current rate of ~1.6G per month, we'll be at 14.5 G by the end of September. This means that the chance of finding a twin by Sept 07 will be 30%. For a 50-50 chance, we'll have to LLR about 29G, which will happen sometime around during the summer of 2008.
But, theorically, with the new server, PG speed could increase: less tech stops, less "server load too high" stops.

We are doing roughly 1TFlop now, we could may be go up to 2-3 TFlop with the new server!

Edit: or somebody else might find a twin over 333333 and we have to jump directly into 500000 (or other!)

Last fiddled with by Terminal on 2007-04-27 at 09:08 Reason: new thougth...

2007-05-02, 22:56   #113
MooooMoo
Apprentice Crank

Mar 2006

2·227 Posts

Quote:
 Originally Posted by MooooMoo Estimated day we'll be the second highest project in terms of number of primes found (assuming the current rate continues): May 24
TPS and PG are at #2 today, which is three weeks earlier than I predicted. Good job guys!

http://primes.utm.edu/bios/top20.php...&by=PrimesRank

2007-05-17, 15:30   #114
Terminal

Apr 2007

310 Posts
PG stats on progress at 333333

Just a copy from my post at PG: it gives some projected dates for our study for n=333333 taking into account PG progress.

Quote:
 just for number lovers... weekly update Status at 17/05/07 - 17:15 my time... today! Checking range at 7955 M Posibility to have found a twin by then was: 17.86% Obviously we did not (or may be is on the way as part of the range is still WIP!) Range per day- we have accelerated a LOT!! -: 176,85M/day: then... 50% prob point (28G aprox): 07/09/2007 (7th September) 75% prob point (56G aprox): 12/02/2008 (12th Feb next year) end of analysis (100G point): 18/10/2008 (18th Oct next year...) By that day, prob to have found twin is 91,5% roughly. 1 prime found every 3689 WU or, 1 prime found every 10,9M range k's (roughly) Addtionally: By 50% prob point, whe would have found 2564 titan primes by 75% prob point, 5128, by the end of this exponent, (100G point), 9157... unfortunatelly, only about 1600 titan primes at 333333 exponent will ever be on the top 5000 list: when we discover more, the olders will drop from the list. Good news: Increase in speed is GREAT! we did not achieve 180M/d because of the resent units yesterday & today and the short stop Sunday morning. Proposal to Rytis & TPS: we should get - after 9200M range already in the loop at PG - the new sieved file for our work here. I think we are still using the old one, not reflecting the k´s that are being cleared out from the sieving effort. We should get a 5-10% speed increase just by that! See you next week!

Last fiddled with by Terminal on 2007-05-17 at 15:32

 2010-08-29, 07:35 #115 MooMoo2     "Michael Kwok" Aug 2010 70210 Posts So this was the thread that started the project. The first post was made on April 13, but was edited a month later. I guess I'm in a nostalgic mood, so I'm wondering how the original unedited post looked like before those edits. Maybe Oddball can bring it up. Looking back on things, TPS has been through quite a ride. There were two record twins, a flood of primes on the top 5000 list, Primegrid coming and leaving, and a new moderator stepping up. There's also a strange feeling of being at the beginning again - there are only a few participants, individual primes are too small to be on the top 5000 list, the project leader is relatively new to the forum, and gribozavr is doing almost all of the sieving. The project started less than five years ago in 2006, but that year seems to be an age away... BTW, I'd like to try some LLR tests for the variable n range, but there's no file that has the k/n pairs with the p<600T factors removed Last fiddled with by MooMoo2 on 2010-08-29 at 07:38
2010-08-29, 17:38   #116
Oddball

May 2010

7638 Posts

Quote:
 Originally Posted by MooMoo2 So this was the thread that started the project. The first post was made on April 13, but was edited a month later. I guess I'm in a nostalgic mood, so I'm wondering how the original unedited post looked like before those edits. Maybe Oddball can bring it up.
Can't do that. I can bring up the original posts for the sieve and LLR reservation threads, but the original post for this thread was edited too long ago.

Quote:
 The project started less than five years ago in 2006, but that year seems to be an age away...
It sure does! The economy was booming back then and single core processors dominated, among other things.

Quote:
 BTW, I'd like to try some LLR tests for the variable n range, but there's no file that has the k/n pairs with the p<600T factors removed
I think gribozavr has the file on a machine that is currently down:

http://www.mersenneforum.org/showpos...&postcount=229

I'm waiting for it too, because we're looking to add LLRnet and PRPnet support for TPS.

 Similar Threads Thread Thread Starter Forum Replies Last Post jzakiya jzakiya 12 2018-12-11 21:09 hydeer Lone Mersenne Hunters 9 2018-04-03 22:54 cuBerBruce Puzzles 3 2014-12-01 18:15 gd_barnes Riesel Prime Search 6 2007-10-12 18:42 jasong Twin Prime Search 14 2006-12-14 23:16

All times are UTC. The time now is 21:38.

Wed Feb 8 21:38:19 UTC 2023 up 174 days, 19:06, 1 user, load averages: 1.03, 1.08, 1.01