Sorry for the short notice of this, but i have not had any internet connection for three days.....thanks to Virgin Media :evil:
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Welcome to the “Drive for Five” Challenge
PrimeGrid is attempting to reach n=5 million for 321 Search (currently at n~4.4M).
321 Search began in February 2003 by Paul Underwood and grew into a distributed prime search effort for the form 3*2^n-1. The initial goal was to build upon the completed work at Proth Search and extend the list of known primes to an exponent of 1 million (n=1M). That was quickly achieved so they advanced their goal to finding a mega prime for which they sieved up to n=5M.
As seen on PrimeGrid’s front page, that goal was achieved on 23 Mar 2008, 7:57:28 UTC, when Dylan Bennett of Canada returned a positive result for n=4235414 (3*2^4235414-1). official announcement | decimal representation
Now all that’s left is to complete the sieved work up to n=5M. Thus the name “Drive for Five”. There’s still a chance that a mega prime exists between now and n=5M.
The Challenge will begin 15 May 2008 00:00 UTC and end 1 June 2008 00:00 UTC or until all WU’s have been completed, whichever comes first. Application builds are available for Linux 32 bit and Windows 32 bit. These applications will be sent to 64 bit clients. Unlike the “Ides of March” Challenge, there is no advantage of 64 bit over 32 bit this time.
ATTENTION: This Challenge is not for the weak of heart. WU’s will take a minimum of 6.5 hours on fast computers (C2Q 2.4GHz) and upwards of 15 hours on slower computers (Athlon64 2.1GHz). It is HIGHLY RECOMMENDED that your systems be stable as the primality program LLR does not tolerate "even the slightest of errors." Please see this post for more details on how you can "stress test" your computer: http://www.primegrid.com/forum_thread.p ... =true#8317
Scores will be kept for individuals and teams. Only WU’s that are issued and returned with a valid result during the Challenge dates will be counted. We will use the “prime score” method which is based on the n value (3*2^n-1) to score the challenge. The only difference is that the primary and double checker of a WU will receive the same score.
Therefore, each completed WU will earn a unique score based on its n value. The higher the n, the higher the score. For more information on scoring, see this thread: http://www.primegrid.com/forum_thread.p ... =true#8728.
Please come join the challenge and help 321 Search complete a GREAT journey.
Best of Luck in wrapping up the initial stage of the 321 Search AND to hopefully finding another MEGA PRIME!!!
Additional Information
The “Drive for Five” is part of PrimeGrid’s Challenge series.
Once 321 Prime Search has been completed to n=5M, we will switch over to the +1 form (3*2^n+1). Currently, that prime search is in the Project Staging Area and is ready to enter BOINC as soon as -1 is complete to 5M. WU's are availabe now in LLRNet if you are interested in testing.
We will then take +1 to n=5M. Afterwards, we'll combine 32-1 and 32+1 together and take both up to n=10M. In that range, we expect another 4-6 Mega Primes!
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b.
Drive for Five Challenge (Prime Grid)
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- Marvin the Dalek
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- Active UBT Contributor 10+ yrs
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Teams: http://www.primegrid.com/challenge/driv ... teams.html
Participants:http://www.primegrid.com/challenge/driv ... users.html
Message from PG:-
Message 9086 - Posted 21 May 2008 4:05:16 UTC
Congratulations to L'Alliance Francophone as they are the first team to surpass 10M Challenge points.
Also, a big thank you to everyone who is helping PrimeGrid and 321 Search tackle this monumental task. The progress achieved so far has been excellent. However, at this time, those huge 321 numbers are moving ahead of us in the race. They are proving to be very tough and are not going down easily. At our current rate, we will fall just short of the 5M goal.
Therefore, we would like to propose a "sprint" this weekend to see if we can get back even or maybe ahead of where we need to be in order to reach 5M by the end of 31 May. We humbly ask all participants and teams to please put a little extra on 321 for the 24th & 25th.
This is truly an uphill Challenge...the closer we get to 5M, the longer the tests take...which means in order to keep the same completion rate, we actually have to increase processing power as the Challenge progresses. It's a difficult task, but one that we are very close to accomplishing. Just over a 1/3 into the Challenge and 9937 WU's have been completed with 19309 remaining. Our daily totals have been:
5/15/2008 - 2100
5/16/2008 - 1166
5/17/2008 - 1847
5/18/2008 - 2002
5/19/2008 - 1347
5/20/2008 - 1285
5/21/2008 - 190 (as of this post)
Thank you again for participating in The Drive for Five Challenge and for all your help and support at PrimeGrid.
End of Message..........
So any extra help will be great
point to remember is these WUs take up to 12 hours each and some time a little more.
So come on team lets show the rest that we can pull together this weekend 24/25 May..we are in position 14 atm I am sure we can get up one more place with a little help from YOU !!..
b.
Participants:http://www.primegrid.com/challenge/driv ... users.html
Message from PG:-
Message 9086 - Posted 21 May 2008 4:05:16 UTC
Congratulations to L'Alliance Francophone as they are the first team to surpass 10M Challenge points.
Also, a big thank you to everyone who is helping PrimeGrid and 321 Search tackle this monumental task. The progress achieved so far has been excellent. However, at this time, those huge 321 numbers are moving ahead of us in the race. They are proving to be very tough and are not going down easily. At our current rate, we will fall just short of the 5M goal.
Therefore, we would like to propose a "sprint" this weekend to see if we can get back even or maybe ahead of where we need to be in order to reach 5M by the end of 31 May. We humbly ask all participants and teams to please put a little extra on 321 for the 24th & 25th.
This is truly an uphill Challenge...the closer we get to 5M, the longer the tests take...which means in order to keep the same completion rate, we actually have to increase processing power as the Challenge progresses. It's a difficult task, but one that we are very close to accomplishing. Just over a 1/3 into the Challenge and 9937 WU's have been completed with 19309 remaining. Our daily totals have been:
5/15/2008 - 2100
5/16/2008 - 1166
5/17/2008 - 1847
5/18/2008 - 2002
5/19/2008 - 1347
5/20/2008 - 1285
5/21/2008 - 190 (as of this post)
Thank you again for participating in The Drive for Five Challenge and for all your help and support at PrimeGrid.
End of Message..........
So any extra help will be great
point to remember is these WUs take up to 12 hours each and some time a little more.
So come on team lets show the rest that we can pull together this weekend 24/25 May..we are in position 14 atm I am sure we can get up one more place with a little help from YOU !!..
b.
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Whilst looking around the Primegrid message boards, I found this link which gives the scoring system and current standings in the 2008 challenge series.
UBT is currently in 9th place after the first challenge, but it looks as though we are probably going to drop a place or two after the current round.
If anyone who's not participating would like to help out, remember to select '3*2^n-1 Prime Search' in your Primegrid preferences.
UBT is currently in 9th place after the first challenge, but it looks as though we are probably going to drop a place or two after the current round.
If anyone who's not participating would like to help out, remember to select '3*2^n-1 Prime Search' in your Primegrid preferences.
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- Active UBT Contributor 10+ yrs
- Posts: 3227
- Joined: Wed Aug 23, 2006 1:00 am
Well the "Drive for five" challenge has now come to an end..
Well done all those who helped along the way..
How did you do?
Well look here:http://www.primegrid.com/challenge/driv ... users.html
And the team did great look here:
http://www.primegrid.com/challenge/driv ... teams.html
14th out of 255 teams..
A very BIG "WELL DONE"
Now who's up for the next challenge?
http://www.primegrid.com/challenge/challenge.php
12 June 08 ....These (TPS LLR) are very quick Wu's to complete take less than 5 mins a pop. This is just a 24 hour challenge so come on team lets get onto this one..
b.
Well done all those who helped along the way..
How did you do?
Well look here:http://www.primegrid.com/challenge/driv ... users.html
And the team did great look here:
http://www.primegrid.com/challenge/driv ... teams.html
14th out of 255 teams..
A very BIG "WELL DONE"
Now who's up for the next challenge?
http://www.primegrid.com/challenge/challenge.php
12 June 08 ....These (TPS LLR) are very quick Wu's to complete take less than 5 mins a pop. This is just a 24 hour challenge so come on team lets get onto this one..
b.