20080502, 22:08  #12 
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
17·251 Posts 
Code:
3891584 Great Internet Mersenne Prime Search by Woltman & Kurowski 137172 Seventeen or Bust 5531 PrimeGrid 5168 Riesel Sieve Project 4414 Riesel Prime Search 3128 The Prime Sierpinski Problem 2771 321search 2237 Yves Gallot's GFN Search Project 1583 Prime Internet Eisenstein Search 1206 GFN 2^17 Sieving project 1019 12121 Search 524 PrimeSearch 324 Mat's Prime Search 269 GFN 2^16 Sieving project 252 Riesel Base 5 220 15k*2^n1 search 162 Les GeneFermiers 53 GFN 2^15 Sieving project 48 GFN 2^14 Sieving project 29 William Garnett's PSearch Code:
PrimeGrid +1210 Riesel Sieve Project +1047 Riesel Prime Search +681 Yves Gallot's GFN Search Project +654 321search +535 PrimeSearch +29 15k*2^n1 search +14 GFN 2^16 Sieving project +1 Riesel Base 5 1 Seventeen or Bust 15 GIMPS 431 Last fiddled with by gd_barnes on 20080522 at 10:11 Reason: Reordered list and last para. 
20080505, 03:32  #13 
May 2008
2^{2} Posts 
No change in scoring
Nope. Just altering the way entrance rank is estimated before it is then calculated exactly. No change to the scoring is planed. Entrance rank and score are not (directly) related.

20080507, 02:54  #14 
May 2007
Kansas; USA
5×2,017 Posts 
I thought I'd do an earlier update this time since we've had nice progress with the recent rally and some recent large primes:
Code:
3891584 Great Internet Mersenne Prime Search by Woltman & Kurowski 137172 Seventeen or Bust 5532 PrimeGrid 5168 Riesel Sieve Project 4460 Riesel Prime Search 3128 The Prime Sierpinski Problem 2771 321search 2237 Yves Gallot's GFN Search Project 1583 Prime Internet Eisenstein Search 1206 GFN 2^17 Sieving project 1031 12121 Search 580 PrimeSearch 324 Mat's Prime Search 269 GFN 2^16 Sieving project 252 Riesel Base 5 220 15k*2^n1 search 162 Les GeneFermiers 53 GFN 2^15 Sieving project 48 GFN 2^14 Sieving project 29 William Garnett's PSearch Code:
+56 PrimeSearch +46 Riesel Prime Search +12 12121 Search +1 PrimeGrid Gary 
20080509, 06:19  #15 
May 2007
Kansas; USA
5·2,017 Posts 
I decided it was time to normalize the top5000 production scores a little bit so we could REALLY see how NPLB stacks up against other major and lesser projects. For every top20 project on the top5000 site, what I did was took the production score on each and divided it by the number of years since the project found it's first prime. Some projects are now defunct so I used the number of years between the first and last prime that was found.
In order to properly compute our score, I did a detailed analysis of the production score that the PrimeSearch project had before NPLB was started and the score since it was started. Prior to 110 days ago when NPLB started, all primes for Primesearch had a total combined production score of 215 in over 9 YEARS! Since NPLB took over the effort, we have had a total production score of 375 in just 31/2 MONTHS!! (Current total 590.) For an analysis of all projects, see the attached spreadsheet. What I concluded was quite satisfying. Here's the bottom line: Primesearch before NPLB: it was the WORST project of any of the top20 projects on the top5000 site with a score of just 23 / year. It had truly languished in obscurity for an extended period. BUT Since NPLB took over the effort, it has been the 5TH BEST project on the site with a score of 1286 / year. We have certainly made a splash on the prime searching community. This beats even the (presumably) mammonth RieselSieve project that is averaging 1170 / year even after finding a recent huge prime. We are just a little ways behind RPS that is averaging 1727 / year. Starting from scratch, this is a HUGE accomplishment in just 3.5 months! I/we owe a debt of gratitude to our faithful searchers. We couldn't have done it without you! What we need now is about 3540% more total computing power on our ranges and perhaps we can finally close the gap with RPS in production score per month/year. This is not a huge gap to fill so if anyone knows of anyone else that would like to get involved with us, bring them our way. Gary 
20080510, 02:15  #16 
I ♥ BOINC!
Oct 2002
Glendale, AZ. (USA)
10001011001_{2} Posts 
Is any project doing "double work" ?
In other words, is any other project doing the same work, thus doing the same work twice? 
20080513, 05:08  #17 
I ♥ BOINC!
Oct 2002
Glendale, AZ. (USA)
3·7·53 Posts 
Bump. Anyone?

20080513, 05:29  #18  
A Sunny Moo
Aug 2007
USA (GMT5)
3·2,083 Posts 
Quote:
Long answer: Most projects are searching different ranges, or even different types, of numbers, than each other, so there is little double work between projects. Projects usually don't even want to search other projects' rangesit would only mean lots of double work and lots of searchers being disappointed by finding a prime, only to find that someone else found it first. Gary can probably give a fuller answer next time he gets on (he's on another business trip right now, so he isn't able to get on as often as usual). Anon 

20080513, 17:40  #19 
May 2007
Kansas; USA
23545_{8} Posts 
I concur with everything that Anon said.
Projects attempt to avoid other projects efforts. We are, in effect, doublechecking some INDIVIDUAL's efforts that were previously mostly done at Primesearch and a little bit at RPS but that is mostly because we've found so many problems with the reporting of Primesearch primes. Our effort probably has more overlap with any prior effort than just about any project but it was a necessity to have 'no prime left behind'. In stating this, up until NPLB, Primesearch had just been a lot of fragmented individual efforts with little coordination, which is why the "project" languished for so long. Gary 
20080521, 08:29  #20 
May 2007
Kansas; USA
2765_{16} Posts 
With help from Anon and Carlos both finding primes for n>600K, we were tops again! Nice work everyone! It looks like the n=333333 primes dropping off finally had a major negative impact on all of the scores. NPLB, CRUS, and RPS were the only ones that gained score.
Code:
3868630 Great Internet Mersenne Prime Search by Woltman & Kurowski 136364 Seventeen or Bust 5507 PrimeGrid 5138 Riesel Sieve Project 4526 Riesel Prime Search 3110 The Prime Sierpinski Problem 2755 321search 2224 Yves Gallot's GFN Search Project 1554 Prime Internet Eisenstein Search 1199 GFN 2^17 Sieving project 1025 12121 Search 648 PrimeSearch 322 Mat's Prime Search 268 GFN 2^16 Sieving project 250 Riesel Base 5 217 15k*2^n1 search 154 Les GeneFermiers 66 Conjectures 'R Us 53 GFN 2^15 Sieving project 48 GFN 2^14 Sieving project Code:
+68 PrimeSearch +66 Riesel Prime Search +40 Conjectures 'R Us 1 GFN 2^16 Sieving project 2 Mat's Prime Search 2 Riesel Base 5 3 15k*2^n1 search 6 12121 Search 7 GFN 2^17 Sieving project 8 Les GeneFermiers 13 Yves Gallot's GFN Search Project 16 321search 18 The Prime Sierpinski Problem 25 PrimeGrid 29 Prime Internet Eisenstein Search 30 Riesel Sieve Project 808 Seventeen or Bust 22954 Great Internet Mersenne Prime Search by Woltman & Kurowski Last fiddled with by gd_barnes on 20080521 at 08:43 
20080521, 12:09  #21  
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
4267_{10} Posts 
Quote:
What caused the huge losses for GIMPS and SoB? For GIMPS was it that GIMPS's first prime got pushed off the top 100 recently? I thought these scores were for anything still on the top 5000. Edit: Post 600 Last fiddled with by MiniGeek on 20080521 at 12:13 

20080521, 15:12  #22  
A Sunny Moo
Aug 2007
USA (GMT5)
6249_{10} Posts 
Quote:
As for why GIMPS is dropping so much in comparison to the others...I guess it's just because their primes are so, so, so big, that the "dropping effect" appears much larger. The normalized scores will drop by an amount proportional to the amount of normalized score the project has. 

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