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Old 2012-08-24, 21:51   #1
ATH
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Default Trippple Checks

I have been searching for and triplechecking exponents where the same user did LL and doublecheck including some where the user is not exactly the same but suspected to be the same person.

I planned to check up to 24M which is the current doublecheck threshold, but now when I finished searching the range I found a lot more of them than I thought I would. So I wondered if others would be interested in triplechecking some of these. Here is a list of lines ready to be copied into worktodo.txt, if you want to take some please make a post "reserving" them, so we don't test the same exponents:

337 exponents:
Code:
DoubleCheck=17601781,66,1
DoubleCheck=17603507,66,1
DoubleCheck=17604589,66,1
DoubleCheck=17611501,66,1
DoubleCheck=17616883,66,1
DoubleCheck=17626753,65,1
DoubleCheck=17629861,65,1
DoubleCheck=17785447,66,1
DoubleCheck=17897587,66,1
DoubleCheck=17901047,67,1
DoubleCheck=18036229,66,1
DoubleCheck=18127939,66,1
DoubleCheck=18136003,67,1
DoubleCheck=18199031,67,1
DoubleCheck=18535969,67,1
DoubleCheck=19149421,66,1
DoubleCheck=19159571,66,1
DoubleCheck=19471237,66,1
DoubleCheck=19594027,66,1
DoubleCheck=19729951,66,1
DoubleCheck=19910141,66,1
DoubleCheck=20061799,66,1
DoubleCheck=20064479,66,1
DoubleCheck=20064997,66,1
DoubleCheck=20066009,66,1
DoubleCheck=20066129,66,1
DoubleCheck=20251529,66,1
DoubleCheck=20296013,66,1
DoubleCheck=20300557,66,1
DoubleCheck=20342501,66,1
DoubleCheck=20384197,66,1
DoubleCheck=20399389,66,1
DoubleCheck=20411243,66,1
DoubleCheck=20501423,66,1
DoubleCheck=20666153,66,1
DoubleCheck=20801909,66,1
DoubleCheck=20838847,66,1
DoubleCheck=20877221,66,1
DoubleCheck=20933863,66,1
DoubleCheck=21032813,66,1
DoubleCheck=21069637,66,1
DoubleCheck=21070613,66,1
DoubleCheck=21073279,66,1
DoubleCheck=21089291,66,1
DoubleCheck=21092167,66,1
DoubleCheck=21114707,66,1
DoubleCheck=21130877,66,1
DoubleCheck=21133649,66,1
DoubleCheck=21135691,66,1
DoubleCheck=21135713,66,1
DoubleCheck=21135767,66,1
DoubleCheck=21141259,66,1
DoubleCheck=21168703,66,1
DoubleCheck=21170209,66,1
DoubleCheck=21185789,66,1
DoubleCheck=21209359,66,1
DoubleCheck=21223387,66,1
DoubleCheck=21245617,66,1
DoubleCheck=21267263,66,1
DoubleCheck=21292163,66,1
DoubleCheck=21296083,66,1
DoubleCheck=21302909,66,1
DoubleCheck=21304889,66,1
DoubleCheck=21316609,66,1
DoubleCheck=21318379,66,1
DoubleCheck=21318839,66,1
DoubleCheck=21325093,66,1
DoubleCheck=21332629,66,1
DoubleCheck=21334889,66,1
DoubleCheck=21354449,66,1
DoubleCheck=21377201,66,1
DoubleCheck=21383029,66,1
DoubleCheck=21383213,66,1
DoubleCheck=21388691,66,1
DoubleCheck=21411437,66,1
DoubleCheck=21417889,66,1
DoubleCheck=21429931,66,1
DoubleCheck=21430639,66,1
DoubleCheck=21444499,66,1
DoubleCheck=21481651,66,1
DoubleCheck=21502367,66,1
DoubleCheck=21507709,66,1
DoubleCheck=21508763,66,1
DoubleCheck=21526733,66,1
DoubleCheck=21537389,66,1
DoubleCheck=21554927,66,1
DoubleCheck=21561571,66,1
DoubleCheck=21584569,66,1
DoubleCheck=21587131,66,1
DoubleCheck=21592807,67,1
DoubleCheck=21621937,67,1
DoubleCheck=21635599,67,1
DoubleCheck=21648311,67,1
DoubleCheck=21650011,67,1
DoubleCheck=21661097,67,1
DoubleCheck=21664879,67,1
DoubleCheck=21665647,67,1
DoubleCheck=21667103,67,1
DoubleCheck=21667579,67,1
DoubleCheck=21668203,67,1
DoubleCheck=21716371,67,1
DoubleCheck=21716479,67,1
DoubleCheck=21717253,67,1
DoubleCheck=21734077,67,1
DoubleCheck=21745733,67,1
DoubleCheck=21759107,67,1
DoubleCheck=21759593,67,1
DoubleCheck=21808243,67,1
DoubleCheck=21808879,67,1
DoubleCheck=21812069,67,1
DoubleCheck=21822991,67,1
DoubleCheck=21834037,67,1
DoubleCheck=21836123,67,1
DoubleCheck=21859723,67,1
DoubleCheck=21863081,67,1
DoubleCheck=21876047,67,1
DoubleCheck=21878243,67,1
DoubleCheck=21882391,67,1
DoubleCheck=21886063,67,1
DoubleCheck=21891817,67,1
DoubleCheck=21899923,67,1
DoubleCheck=21917633,67,1
DoubleCheck=21919669,67,1
DoubleCheck=21922993,67,1
DoubleCheck=21925289,67,1
DoubleCheck=21936611,67,1
DoubleCheck=21946867,67,1
DoubleCheck=21948749,67,1
DoubleCheck=21951749,67,1
DoubleCheck=21994727,67,1
DoubleCheck=22063897,67,1
DoubleCheck=22067161,67,1
DoubleCheck=22083407,67,1
DoubleCheck=22118501,67,1
DoubleCheck=22118647,67,1
DoubleCheck=22124107,67,1
DoubleCheck=22132367,67,1
DoubleCheck=22143959,67,1
DoubleCheck=22160773,67,1
DoubleCheck=22161941,67,1
DoubleCheck=22162633,67,1
DoubleCheck=22162853,67,1
DoubleCheck=22163117,67,1
DoubleCheck=22164011,67,1
DoubleCheck=22177559,67,1
DoubleCheck=22198367,67,1
DoubleCheck=22202387,67,1
DoubleCheck=22225871,67,1
DoubleCheck=22225897,67,1
DoubleCheck=22228441,67,1
DoubleCheck=22242917,67,1
DoubleCheck=22250849,67,1
DoubleCheck=22261123,67,1
DoubleCheck=22267481,67,1
DoubleCheck=22271927,67,1
DoubleCheck=22272923,67,1
DoubleCheck=22286717,67,1
DoubleCheck=22287383,67,1
DoubleCheck=22312229,67,1
DoubleCheck=22319981,67,1
DoubleCheck=22382021,67,1
DoubleCheck=22390457,67,1
DoubleCheck=22397059,67,1
DoubleCheck=22403729,67,1
DoubleCheck=22405043,67,1
DoubleCheck=22419713,67,1
DoubleCheck=22426231,67,1
DoubleCheck=22430269,67,1
DoubleCheck=22437431,67,1
DoubleCheck=22439663,67,1
DoubleCheck=22449467,67,1
DoubleCheck=22454273,67,1
DoubleCheck=22457641,67,1
DoubleCheck=22489039,67,1
DoubleCheck=22503031,67,1
DoubleCheck=22503889,67,1
DoubleCheck=22517303,67,1
DoubleCheck=22523183,67,1
DoubleCheck=22524893,67,1
DoubleCheck=22525681,67,1
DoubleCheck=22537759,67,1
DoubleCheck=22541699,67,1
DoubleCheck=22542109,67,1
DoubleCheck=22542343,67,1
DoubleCheck=22560191,67,1
DoubleCheck=22579967,67,1
DoubleCheck=22580401,67,1
DoubleCheck=22581413,67,1
DoubleCheck=22581463,67,1
DoubleCheck=22605091,67,1
DoubleCheck=22609919,67,1
DoubleCheck=22632487,67,1
DoubleCheck=22652293,67,1
DoubleCheck=22660943,67,1
DoubleCheck=22663153,67,1
DoubleCheck=22677667,67,1
DoubleCheck=22681031,67,1
DoubleCheck=22692221,67,1
DoubleCheck=22692629,67,1
DoubleCheck=22726883,67,1
DoubleCheck=22727293,67,1
DoubleCheck=22746007,67,1
DoubleCheck=22770413,67,1
DoubleCheck=22805219,67,1
DoubleCheck=22806107,67,1
DoubleCheck=22806307,67,1
DoubleCheck=22813397,67,1
DoubleCheck=22817393,67,1
DoubleCheck=22826989,67,1
DoubleCheck=22829531,67,1
DoubleCheck=22842689,67,1
DoubleCheck=22855009,67,1
DoubleCheck=22873679,67,1
DoubleCheck=22878367,67,1
DoubleCheck=22887217,67,1
DoubleCheck=22900079,67,1
DoubleCheck=22916587,67,1
DoubleCheck=22924039,67,1
DoubleCheck=22937227,67,1
DoubleCheck=22939249,67,1
DoubleCheck=22939687,67,1
DoubleCheck=22939871,67,1
DoubleCheck=22947917,67,1
DoubleCheck=22948213,67,1
DoubleCheck=22951429,67,1
DoubleCheck=22952051,67,1
DoubleCheck=22995253,67,1
DoubleCheck=22999129,67,1
DoubleCheck=23001371,67,1
DoubleCheck=23002433,67,1
DoubleCheck=23002949,67,1
DoubleCheck=23006603,67,1
DoubleCheck=23025619,67,1
DoubleCheck=23047363,67,1
DoubleCheck=23057101,67,1
DoubleCheck=23071157,67,1
DoubleCheck=23077679,67,1
DoubleCheck=23078009,67,1
DoubleCheck=23083289,67,1
DoubleCheck=23086603,67,1
DoubleCheck=23087107,67,1
DoubleCheck=23096261,67,1
DoubleCheck=23114473,67,1
DoubleCheck=23119297,67,1
DoubleCheck=23130979,67,1
DoubleCheck=23147317,67,1
DoubleCheck=23160253,67,1
DoubleCheck=23162189,67,1
DoubleCheck=23162507,67,1
DoubleCheck=23165851,67,1
DoubleCheck=23167367,67,1
DoubleCheck=23170313,67,1
DoubleCheck=23176099,67,1
DoubleCheck=23179229,67,1
DoubleCheck=23188943,67,1
DoubleCheck=23190653,67,1
DoubleCheck=23205011,67,1
DoubleCheck=23224391,67,1
DoubleCheck=23254733,67,1
DoubleCheck=23257757,67,1
DoubleCheck=23260187,67,1
DoubleCheck=23269483,67,1
DoubleCheck=23310811,67,1
DoubleCheck=23310953,67,1
DoubleCheck=23311291,67,1
DoubleCheck=23311609,67,1
DoubleCheck=23311901,67,1
DoubleCheck=23311909,67,1
DoubleCheck=23334277,67,1
DoubleCheck=23344679,67,1
DoubleCheck=23353069,67,1
DoubleCheck=23354993,67,1
DoubleCheck=23364109,67,1
DoubleCheck=23374669,67,1
DoubleCheck=23378041,67,1
DoubleCheck=23392961,67,1
DoubleCheck=23394407,67,1
DoubleCheck=23411981,67,1
DoubleCheck=23413289,67,1
DoubleCheck=23414221,67,1
DoubleCheck=23418287,67,1
DoubleCheck=23423947,67,1
DoubleCheck=23434693,67,1
DoubleCheck=23436733,67,1
DoubleCheck=23440159,67,1
DoubleCheck=23452321,67,1
DoubleCheck=23495233,67,1
DoubleCheck=23509313,67,1
DoubleCheck=23523403,67,1
DoubleCheck=23564663,67,1
DoubleCheck=23569597,67,1
DoubleCheck=23578271,67,1
DoubleCheck=23580223,67,1
DoubleCheck=23586197,67,1
DoubleCheck=23599567,67,1
DoubleCheck=23610701,67,1
DoubleCheck=23612279,67,1
DoubleCheck=23638883,67,1
DoubleCheck=23645761,67,1
DoubleCheck=23647031,67,1
DoubleCheck=23651717,67,1
DoubleCheck=23655497,67,1
DoubleCheck=23668451,67,1
DoubleCheck=23692387,67,1
DoubleCheck=23701277,67,1
DoubleCheck=23705623,67,1
DoubleCheck=23705921,67,1
DoubleCheck=23708227,67,1
DoubleCheck=23719747,67,1
DoubleCheck=23740417,67,1
DoubleCheck=23740819,67,1
DoubleCheck=23741779,67,1
DoubleCheck=23741803,67,1
DoubleCheck=23752919,67,1
DoubleCheck=23776799,67,1
DoubleCheck=23785693,67,1
DoubleCheck=23816141,67,1
DoubleCheck=23834059,67,1
DoubleCheck=23847503,67,1
DoubleCheck=23851171,67,1
DoubleCheck=23853883,67,1


Besides these I have a list of 98 exponents like this: http://www.mersenne.org/report_expon...&B1=Get+status
with one LL being done by an empty username "". I assume this is a "valid" user with an empty user name, so these does not need to be triplechecked?

I also have a list of 542 exponents where both LLs are done by "ars technica team prime rib" or "team prime rib" but since these are large teams, the LLs were most likely done by different users, so no need to triplecheck them? They seem to be the same team both linking to http://www.teamprimerib.com

Last fiddled with by ATH on 2012-08-24 at 21:59
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Old 2012-08-24, 21:53   #2
ATH
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My post got too long, had to cut out last few exponents, here they are:

Code:
DoubleCheck=23861021,67,1
DoubleCheck=23861441,67,1
DoubleCheck=23861657,67,1
DoubleCheck=23878973,67,1
DoubleCheck=23892919,67,1
DoubleCheck=23893223,67,1
DoubleCheck=23893367,67,1
DoubleCheck=23897417,67,1
DoubleCheck=23903953,67,1
DoubleCheck=23910947,67,1
DoubleCheck=23914127,67,1
DoubleCheck=23926729,67,1
DoubleCheck=23931077,67,1
DoubleCheck=23944387,67,1
DoubleCheck=23953801,67,1
DoubleCheck=23980511,67,1

Btw here are the stats of the 0-24M range:

Primes: 40
Factored: 971,795 (64.48%)
Doublechecked LLs: 535,287 (35.52%)
--------------------------------
Total: 1,507,122 (primes <24M)

Last fiddled with by ATH on 2012-08-24 at 22:09
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Old 2012-08-24, 22:03   #3
Dubslow
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There's one expo done in the 53298xxx range that was double-me. It was one of my first six exponents, and three-four months after it was done, I ran the DC with CUDALucas just to prove to myself that my computer was sane.

I'll reserve some after I RMA my graphics card (probably will be a few weeks).
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Old 2012-08-25, 23:50   #4
lycorn
 
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Hmmm... I remember GW said the server would accept DCs by the same user as the original LL test, if the shift counts were different. So if the server has accepted them, I suspect we will be ... , therefore wasting useful resources.
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Old 2012-08-26, 00:29   #5
kladner
 
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Quote:
Originally Posted by Dubslow View Post
There's one expo done in the 53298xxx range that was double-me. It was one of my first six exponents, and three-four months after it was done, I ran the DC with CUDALucas just to prove to myself that my computer was sane.

I'll reserve some after I RMA my graphics card (probably will be a few weeks).
Why the RMA? Fan trouble?
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Old 2012-08-27, 17:02   #6
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I'll take:

Code:
DoubleCheck=17629861,65,1
DoubleCheck=17785447,66,1
DoubleCheck=17897587,66,1
DoubleCheck=17901047,67,1
DoubleCheck=18036229,66,1
DoubleCheck=18127939,66,1
DoubleCheck=18136003,67,1
DoubleCheck=18199031,67,1
DoubleCheck=18535969,67,1
DoubleCheck=19149421,66,1
DoubleCheck=19159571,66,1
DoubleCheck=19471237,66,1
DoubleCheck=19594027,66,1
DoubleCheck=19729951,66,1
DoubleCheck=19910141,66,1
when I'm done with my current bunch, then it is at least done up to 20M. Then we might skip the rest if noone think it's important. At least we have the list to do if need arises.
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Old 2012-09-05, 14:53   #7
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I checked the range 24M-25M now that the trailing edge passed 25M. Out of 21,835 doublechecked exponents 80 of them was done by the same user, that is every 273rd exponent.

It seems a bit high to me since far from everyone are doing both LL and LL-D and that the 2 tests should have been done years apart, the chances of getting your own exponent again should be lower.

Last fiddled with by ATH on 2012-09-05 at 15:15
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Old 2012-09-05, 15:33   #8
kracker
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Wrong Mr. Troll. I think Tippie check would have matched better...
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Old 2012-09-05, 18:40   #9
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IIRC, the random shift was said to ensure that two tests with different shift counts will LL-process completely different bit patterns until the shifts are undone for the final result. If this has never been shown to have failed in practice, or to be able to fail in theory, then I think we have as much independence of LL/DC when both are performed on the same system as when the two are performed on different systems.

My opinion is that until the theoretical or actual failure of differently-shifted tests to be independent has been demonstrated, triple checks based solely on suspected identity of LL and DC performer are a waste of time.

OTOH, everyone's entitled to waste his/her own time, for entertainment purposes if nothing else!!

Quote:
Originally Posted by ATH View Post
I checked the range 24M-25M now that the trailing edge passed 25M. Out of 21,835 doublechecked exponents 80 of them was done by the same user, that is every 273rd exponent.

It seems a bit high to me since far from everyone are doing both LL and LL-D and that the 2 tests should have been done years apart, the chances of getting your own exponent again should be lower.
Let's have a more analytic/statistical calculation of whether that 80-out-of-21835 is suspiciously high, given the actual circumstances.

Perhaps someone has done a similar analysis on some other range in the past?

Last fiddled with by cheesehead on 2012-09-05 at 18:52
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Old 2012-09-05, 21:34   #10
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I, for one, have done several times two matching tests on the same exponent (maybe some of those 24M were done by me, don´t remember). That happened on several exponents that had a first time test by some user, then I performed an unmatching DC, and immediately reserved the exponent for a TC. I believe some other users may have done the same over the time, so a count of 80 out of 21K+ doesn´t look unreasonable to me.
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Old 2012-11-05, 19:30   #11
kracker
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I'll take
Code:
DoubleCheck=17601781,66,1 
DoubleCheck=17603507,66,1 
DoubleCheck=17604589,66,1 
DoubleCheck=17611501,66,1
..the top 4, although it will be about 2 days before I can start them
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