Noob question.. What does Cxxx_yyy_zzz mean?:confused:

[QUOTE=ramshanker;431112]Noob question.. What does Cxxx_yyy_zzz mean?:confused:[/QUOTE]See [url]http://www.mersenneforum.org/showthread.php?t=19355[/url]

Does the C219 from 145^66+66^145 sieved on 15e have enough relations? I can't start that job for a couple more weeks but it appears to fall short of the usual 410-450M relations seen with a 32-bit job. Just asking. If the count is as intended I will be happy to work it until a matrix builds.

ramshanker, Andrey: most Cxxx_yyy_zzz numbers sieved by NFS@Home's 14e are indeed x^y+y^x numbers, but I also use the same naming convention for Aliquot composites, with the middle part being the sequence starting point and the last part being the index :smile:

Sean: yeah, I too noticed that it seemed to fall short of the usual number of relations for a 32-bit LPs task. However, 15e and 32-bit LPs are outside of my area of expertise, so I left that number alone.

C188_140_116 has a factor:
[code]p88 factor: 3578168986836321681420484494600207278026326846424690175266612786758797018615761223837089
[/code]

[QUOTE=swellman;431099]Reserving C206_117_106.[/QUOTE]

Bump. I think this reservation got lost in the noise.

Also, I'm reserving C205_121_72 for post processing. Thanks.

C175_148_42 factors as:
[quote]p52 factor: 7487816784188795227856308762673376710707156615253957
p123 factor: 326126833207575373724839477854528650007668480549958111340930954759492241268403710282920187011627144535953864970254249066921[/quote]

9_257_plus_8_257 factored
 

[code]
Mon Apr 11 18:24:27 2016 p81 factor: 995789698250878983453115001976840794666599643056449314312832075965973555476166601
Mon Apr 11 18:24:27 2016 p146 factor: 96977340411500019049074105634306322723770522235188438810335912308886575692023114619573697532073469070723084434681296196954641722389884199938936267
[/code]

11_236_plus_8_236 factored
 

[code]
Mon Apr 11 07:45:07 2016 p70 factor: 7411520679130525701792980589169560902760572095309563609782856293875201
Mon Apr 11 07:45:07 2016 p101 factor: 31473706847825100137020211892268157029347134978810342803896451881970968400589984680587934243562602601
[/code]

Taking C186_126_110 for postprocessing.

Reserving 12_229_minus_5_229.

[QUOTE=wombatman;430309]It's going to be a little bit, but I'm going to go ahead and reserve the Home Primes 2 (4496) number on the 15e server. Thanks again to Fivemack for queuing it up and NFS@Home for running it. :smile:[/QUOTE]

Sorry, I missed this and briefly reserved the number myself, but since I haven't started running it yet I've set the reservation back to you. It's ready as far as I can tell, I suspect the matrix will be big.

6_317_minus_5_317 results
 

[B]6_317_minus_5_317
[/B][code]prp71 factor: 93289642830067569612638766839862923842757410657258400068632425436852959
prp134 factor: 24136963340357236722671996549199796034966228880740295572363828978355399830399331769967671916516043818231497686608740492554473486469487
[/code]

Reserving [B]C162_OP_t500[/B]

[QUOTE=VictordeHolland;431399]Reserving [B]C162_OP_t500[/B][/QUOTE]
The factors are already posted to [URL=http://www.factordb.com/index.php?id=1100000000438704792]FDB[/URL].

Reserving C174_130_118.

[QUOTE=RichD;431405]The factors are already posted to [URL="http://www.factordb.com/index.php?id=1100000000438704792"]FDB[/URL].[/QUOTE]
Thanks for the heads-up!
I'll take C175_130_86 then.

C208_139_42 is:
[code]p83 factor: 45831619772993771621436902009481460358214897190721836768086022318162905923744888227
p125 factor: 60098636156118680786421741283165998532642713242524057672634239848224633666919663276915208377552566218742348382597843387023083[/code]

[QUOTE=VictordeHolland;431409]Thanks for the heads-up.[/QUOTE]

I don't know where they came from. I first noticed it when sieving was entering the final phase for this number.
(i.e., it wasn't me.)

Not a first time.

[url]http://www.mersenneforum.org/showthread.php?p=430620[/url]

Home Primes 2 C190
 

This C190 is failing to get past the filtering step:

[CODE]memory use: 5120.9 MB
keeping 130919195 ideals with weight <= 200, target excess is 621457
commencing in-memory singleton removal
begin with 120472847 relations and 130919195 unique ideals
reduce to 119810431 relations and 130256401 ideals in 24 passes
max relations containing the same ideal: 200
filtering wants 1000000 more relations[/CODE]

There are currently 426,609,897 relations. Is there anything I can try to do to get past this, or does it need more relations?

[QUOTE=wombatman;431424]This C190 is failing to get past the filtering step:

[CODE]memory use: 5120.9 MB
keeping 130919195 ideals with weight <= 200, target excess is 621457
commencing in-memory singleton removal
begin with 120472847 relations and 130919195 unique ideals
reduce to 119810431 relations and 130256401 ideals in 24 passes
max relations containing the same ideal: 200
filtering wants 1000000 more relations[/CODE]

There are currently 426,609,897 relations. Is there anything I can try to do to get past this, or does it need more relations?[/QUOTE]

Is that with the default target density? Have you tried a lower target density?

Even if it builds with a lower target density, a few million more relations would render the LA quicker anyways.

Default target density. I must admit that I completely forgot to even try a higher density. :redface:

[QUOTE=wombatman;431429]Default target density. I must admit that I completely forgot to even try a higher density. :redface:[/QUOTE]

Lower density. Higher density is harder for a given relcount.

Right. Your question just made me realize that I normally start out with TD=120 or 110, and I hadn't even done that.

To be clear about my answer, I'm running into the problem with the default density, not a higher one.

IIRC, the default density for msieve is 70. If it won't build there, it's not going to build at TD=110 or 120. Can you build a matrix at TD=60? Not sure how low TD can go.

A few more relations probably wouldn't hurt but only Fivemack can help with that.

[QUOTE=pinhodecarlos;431407]Reserving C174_130_118.[/QUOTE]

Tue Apr 12 21:50:40 2016 commencing 2-way merge
Tue Apr 12 21:51:00 2016 reduce to 20024273 relation sets and 19711406 unique ideals
Tue Apr 12 21:51:00 2016 commencing full merge
Tue Apr 12 22:07:00 2016 memory use: 907.6 MB
Tue Apr 12 22:07:04 2016 found 27801 cycles, need 4100398
Tue Apr 12 22:07:04 2016 too few cycles, matrix probably cannot build

I release...

Ben: I have just expanded the range for the HP2 number.

Carlos: OK, released C174_130_118 and expanded the range as well. With 112M raw relations, filtering is usually a success... and filtering failures usually occur earlier than the full merge step !

[QUOTE=swellman;431435]IIRC, the default density for msieve is 70. If it won't build there, it's not going to build at TD=110 or 120. Can you build a matrix at TD=60? Not sure how low TD can go.

A few more relations probably wouldn't hurt but only Fivemack can help with that.[/QUOTE]

I'll stick in some more sieving and get wombatman half a billion raw relations to work with.

(EDIT: we've collided in the post, with current settings it might get to 600M raw relations; no big deal, it's just another week to wait and it really ought to filter at td=120 after all that)

[QUOTE=debrouxl;431446]
Carlos: OK, released C174_130_118 and expanded the range as well. With 112M raw relations, filtering is usually a success... and filtering failures usually occur earlier than the full merge step ![/QUOTE]

Sorry about that, it's the second time I try to come back to post-processing help and fail. First due to msieve version and now lack of raw relations to build matrix.

[QUOTE=debrouxl;431446]Ben: I have just expanded the range for the HP2 number.

Carlos: OK, released C174_130_118 and expanded the range as well. With 112M raw relations, filtering is usually a success... and filtering failures usually occur earlier than the full merge step ![/QUOTE]

[QUOTE=fivemack;431449]I'll stick in some more sieving and get wombatman half a billion raw relations to work with.

(EDIT: we've collided in the post, with current settings it might get to 600M raw relations; no big deal, it's just another week to wait and it really ought to filter at td=120 after all that)[/QUOTE]

Much appreciated! I'll keep an eye on it and grab when appropriate.

Reserving 3_521_minus_2_521 from the 14e queue.

C186_126_110 completed: 19.5 hours for 5.8M matrix with TD=120

[CODE]prp79 factor: 2160695798016739678502241114470348647263433726493774718509254913332357129189837
prp108 factor: 412119112576446645580194806913749961021116099890507310716781874778647845776783347737505654402942942770232541[/CODE]

Reserving 3_521_plus_2_521.

Running C219_145_66, ETA Monday (18 April) lunchtime.

Just started LA for GC_12_230 - 15.5M matrix, ETA ~5days.

12_227_minus_5_227
 

[CODE]p73 factor: 2876745831146668441393961505244751359538878002527407324627788234494859169
p122 factor: 23137894038843785074279125501326817492312886975368464028151929875358809077441110178387147022604831151505159740982684168339[/CODE]

Running C175_142_50

Trying once again C174_130_118.

[QUOTE=pinhodecarlos;431690]Trying once again C174_130_118.[/QUOTE]

Same issue. Please see msieve log file.

Reserving 8_274_plus_7_274 (ETA 21 April evening)

[QUOTE=pinhodecarlos;431699]Same issue. Please see msieve log file.[/QUOTE]

OK, I've put another few million relations on the hob for you, try again in a week or so.

[QUOTE=fivemack;431701]OK, I've put another few million relations on the hob for you, try again in a week or so.[/QUOTE]

Tom, I won't be able to run it in a week because I'll be going a few days to Spalding. I'll be returning on the 4th of May.

Carlos: could you try again at a lower density, e.g. 95 ? 120 seems pretty high for a 30-bit LPs task.
The number of raw relations and duplicate ratio are alright, now and therefore the previous time as well. To me at least, there's no clear reason why you'd be hitting the filtering collapse caused by massive oversieving, which normally occurs (much) higher.

[QUOTE=debrouxl;431703]Carlos: could you try again at a lower density, e.g. 95 ? 120 seems pretty high for a 30-bit LPs task.
The number of raw relations and duplicate ratio are alright, now and therefore the previous time as well. To me at least, there's no clear reason why you'd be hitting the filtering collapse caused by massive oversieving, which normally occurs (much) higher.[/QUOTE]

Lionel, started it with LD=95, I'll return back within an hour.

[QUOTE=pinhodecarlos;431705]Lionel, started it with LD=95, I'll return back within an hour.[/QUOTE]

LA is running, ETA 59 hours.

[QUOTE=swellman;430622]Reserving [B]11_236_plus_10_236[/B] for post processing.[/QUOTE]

[code]
prp84 factor: 124503757788091216030579140426602765968307558900197785203218461204288984421849832153
prp125 factor: 33660627687667808192935660198370490445760529457013395518273640689907685261042313358421205056550840769459628529610052323652033
[/code]

12_229_minus_5_229 factored
 

[code]
p54 factor: 166899360165107719355305084108136230882782779446251653
p143 factor: 54085038099213936897717547570988411462479679630905647175799834507166631922484671800176541432216654671756084666033052112422530919362216167333531
[/code]

C175_142_50 done
 

[code]
Sun Apr 17 10:06:06 2016 prp66 factor: 343802097032161037126536774623020557577914652223251574784502530837
Sun Apr 17 10:06:06 2016 prp110 factor: 18081894463324093958905177704556244186078750270367917857544491236512482418184815959851055523615984344326044209
[/code]

Just over 24 hours for 7.6M density-120 matrix on six threads i7/4930K

3_521_minus_2_521 factored
 

[code]
p63 factor: 519505851059549042461537543544320076788305090700791717379708963
p119 factor: 38719050004387686990657080001192329804902691561971831855693556827300632326893528811323114713528456095427780879171301229
[/code]

Reserving 4_412_plus_3_412 from the 14e queue.

C219_145_66 done
 

[code]
prp90 factor: 246942396362291416834519994518824326259312814206466997776252889222395437653994328714266293
prp130 factor: 2474701216844697167501750166924756040796346633708173415548280921774307649915553759941930049272215126191277492180726905817853350763
[/code]

82 hours on six threads i7/5820K for 12.9M density-120 matrix; log attached

3_521_plus_2_521 completed: 57 hours for 12M matrix with TD=120

[CODE]prp69 factor: 111078630916414549898214685926111959075057254189979081034182790451421
prp167 factor: 33933275830379952493064638810978510923097006770827525353170184406939808549116264586108327968020509538409736509419498214852161387520641485277403038083476747290464717011
[/CODE]C173_933436_12507 completed: 40.5 hours for 8M matrix with TD=140 (-t 12)

[CODE]prp85 factor: 2460630015704996014252831120101664180080524162467671622354098550033754340639827557759
prp89 factor: 11775907101387333494809210541038950009562075828465305357206012192352304331495554026245453[/CODE]

Taking 12101_61_minus1.

C175_130_86 results
 

[B]C175_130_86[/B]
[code]prp65 factor: 19496485159322434038349197764460218568008267309097851814508179737
prp111 factor: 146289631601325497817412439504113065874970332748115933438512456586948754610570408494866148615052375714852143133[/code]

Taking C204_119_99

Reserving C179_140_37 and C208_143_36.

C205_121_72 Factored
 

[code]
prp90 factor: 351464385372188675625175437787815025288655349374768580015221257470363733082592936562827731
prp115 factor: 7431966097840659729982937706066687334004954165101264321592785670170075260547424808057831344960649736701447710355371
[/code]

Reserving C231_117_97 for postprocessing. Thanks.

C174_130_118 done
 

C174_130_118 done

[CODE]
Tue Apr 19 03:19:40 2016 prp64 factor: 7518761874050782249508780979181738408716284710883091227273665493
Tue Apr 19 03:19:40 2016 prp110 factor: 49833566327191734004905063072381845102978755076841293127715207302642349937336163952741162007087622906286901761
[/CODE]

GC_12_230 completed: 109 hours for 15.5M matrix with TD=120

[CODE]prp63 factor: 151348948198267379644304112159234509855785462412486179661360671
prp181 factor: 1087192231865121320566206278501462789074628801004341491054867841134368519639773745645137639716410710030856534377465581978418703455408828263627021789435058678081972038749818251151677
[/CODE]C163_11040_9528 completed: 32 hours for 7M matrix with TD=130 (-t 12)

[CODE]prp68 factor: 90099457330170674135246839384682841365770117947240244306138189988929
prp95 factor: 94199412009745761961664061942522218315278040700589710288227098574323499124446822615197577118001
[/CODE]Taking GC_3_598 next.

C179_140_37 completed: 12.5 hours for 5.6M matrix with TD=120

[CODE]prp86 factor: 31213939121664318370797417877338016078767176995751253668003399656639182126468618206447
prp94 factor: 1200720204118511401602767440293444264796999594404001873334108447860246501243683443350679694527
[/CODE]C208_143_36 completed: 13.5 hours for 4.7M matrix with TD=120 (-t 12)

[CODE]prp84 factor: 188782993947174430702510462829041093170927355513760032300089699219030195245734120933
prp125 factor: 46911534881064143430784089034956228619477990629972931171536461104142798720576313536471918039970875123180399883498373707558781[/CODE]

Reserving C179_140_37 and C184_147_32.

Taking 251101831_29_minus1

(edit: 23.1M matrix at density 70 indicated nothing like enough sieving; extending range by 25% and trying again)

GC_3_598 completed: 15 hours for 6M matrix with TD=120

[CODE]prp73 factor: 6934497839952779033421127602022414474225545207730646122201261233037553867
prp88 factor: 1753257731633275423532869039260128630292271958549919918897003071956252654338492140358469
[/CODE]

4_412_plus_3_412 factored
 

[code]
p63 factor: 456837240474264494365918783763317911017288222189096753643098297
p120 factor: 251810882849811442506160441387774902126789876366773207307938676230672919038528360952256804552767676239784582753289672161
[/code]

Reserving 118^109+109^118 from 15e queue.

12101_61_minus1 done
 

12101_61_minus1 done

[CODE]
Thu Apr 21 07:34:21 2016 prp75 factor: 403421044929871954774855579276771608743064517121615493980058352213476348941
Thu Apr 21 07:34:21 2016 prp90 factor: 635058862207311929087148980919201766354076294158194032280936375462305516101361247929164043
[/CODE]

C184_147_32 completed: 14 hours for 5.5M matrix with TD=120

[CODE]prp62 factor: 19484817158448934900258256295863908574240194776283568563941427
prp123 factor: 474934881215456263116181400148263148488267800868711675695360193119039575070105071895993314749558667699997245955539502318091
[/CODE]

C186_145_34 completed: 26.5 hours for 8M matrix with TD=110

[CODE]P56 = 13617542299234528092096497953641164905312157589984386819
P65 = 93826345539868019278482390545257820502577647014885489797649642857
P66 = 241448734637388918529146368136026680151377281719662513631452889747[/CODE]

The C190 for Home Primes 2 #4496 is finally running. 8 threads, TD=110 (120 wouldn't build).

...annnnnd it's using 22GB of RAM and will finish in a mere 922 hours or so, give or take.

Yikes. :ouch1:

Measuring matrix time in weeks rather than hours is a big change!
What dimension is the thing?

A C170 (my next GNFS project) may take me 6-8 weeks to sieve, so a C190 should be over a year (4 doublings of 7 weeks is 2 years, actually) to sieve on a single machine? If so, 6 weeks to solve the matrix sounds cheap at under 10% of sieve time.

Matrix is 34M. Current estimated time remaining is 877 hours (1.1% progress). It's far and away the largest one I've tackled.

I'm glad the extra 100M relations were gathered. I can't imagine doing this at a lower TD. :smile:

I'll take 13003_59_minus1 next.

146^61+61^146 Factored
 

[code]
prp99 factor: 161130639956702191065551502802108285849486803390711165938695462322803470825093257924969400814884533
prp101 factor: 58078934010112985134998430978154117549794128102364272700533527622563468185874291871690461830306507649
[/code]

Reserving 119^103+103^119 for postprocessing once it is done sieving. Thanks.

C226_118_109 completed: 81 hours for 12.3M matrix with TD=130

[CODE]prp74 factor: 54039142379036458573520405642433922005099747170882928486641358710895981161
prp152 factor: 40500860027668256640598753096581819658060984036996776059094038215194989866159732457546116908800757760268876979274652554346646143510899715996818192810999[/CODE]+logs for C179_140_37 and C208_143_36

Reserving C235_119_101 and C177_148_94 (from 15e)

ETA for 251101831_29_minus1 now Monday May 2 evening (might be Monday morning, but I'm at a family event in Cumbria on Sunday and the long drive back will be long)

[QUOTE=fivemack;432716]ETA for 251101831_29_minus1 now Monday May 2 evening (might be Monday morning, but I'm at a family event in Cumbria on Sunday and the long drive back will be long)[/QUOTE]

Did this one ever finish?

[QUOTE=fivemack;431700]Reserving 8_274_plus_7_274 (ETA 21 April evening)[/QUOTE]

[QUOTE=jyb;432721]Did this one ever finish?[/QUOTE]If it did, I've not yet been told about it.

I'll take 7045669_31_minus1 next.

[QUOTE=jyb;432721]Did this one ever finish?[/QUOTE]

Well-caught; it turns out that I've forgotten to run the -nc3 pass on it. Running now.

7045669_31_minus1 factored
 

8 hours to solve a 3.7M matrix on Core-i5, -t 4 using target_density=120.
[CODE]p58 factor: 4882362880370174839648490448651168403650161310685590236761
p91 factor: 3408468101499617860588084678979599010791556475523571088101082385849638948220973912721357917[/CODE]

I'll take C202_139_60 next.

C231_117_97 Factored
 

[code]
prp63 factor: 253517118591325738937971611461585863490125190342088810027322061
prp169 factor: 2429560886922431815775643020499445499139200601138138025614376249265451709211966937107065963291093379863583559039739323805270540502967490735310986302209304767393766055169
[/code]

I'll take C154_P159_plus_1 please if no one else has reserved it thanks

8^274+7^274 done
 

[code]
Fri Apr 29 11:31:30 2016 prp82 factor: 2397018421679605666851857176490838437359402488560106085562303613944191907311380569
Fri Apr 29 11:31:30 2016 prp109 factor: 4647193581977064203588322075780479221961073385904314188740250068936020481488177667762762248523822935537594661
[/code]

About 80 hours on 6 threads i7/5820K for 12.8M matrix with density 115.

Reserving C197_118_105 if it is still available.

13003_59_minus1 factored
 

144 hours to solve a 14M matrix on Core-i5, -t 4 using target_density=116 (TD=120 failed).
[CODE]p104 factor: 14650157300929437601041731937728795221078326362644493374126951441952014822559531262448382968169823616741
p136 factor: 2810073897392709408295428691606998163282993522411979250111938029123907212982495883862495412702248502532723121996404415530494353315768913[/CODE]
I'll take C206_119_97 next.

Reserving 11_239_plus_4_239 from the 14e queue.

C153_P160_plus_1 has two large factors:
[code]p73 factor: 4576332799652747199931522648184176963648164467584154171988618050546247097
p81 factor: 119594480999492408947891263513714610941651998275906450484041596101028339201084709[/code]

I'll take 11_239_plus_5_239 next.
(After C202_139_60 completes in about 50 hours.)

Reserving 89999_225.

251101831_29 complete
 

[code]
Sun May 1 22:36:37 2016 prp105 factor: 585855531993062383661452263850013353166081942212607213091697577845688643622687343171034487191638218132753
Sun May 1 22:36:37 2016 prp125 factor: 69989522421751364795707318940628546917466193465546924839194024806426120458448644357204930809539743495588091653437697658261553
[/code]

Decent-sized penultimate factor; 81 hours on 6 threads i7/5820K for 12.9M matrix at density 120. The attached log file is long because it records earlier filtering attempts with fewer relations that made an unacceptably huge matrix.

Bother, I forgot to leave C200_150_148 running over the long weekend. ETA probably next Monday morning, 9 May.

C204_119_99 result
 

C204_119_99
[code] prp54 factor: 262612490173004551363235737644555889297944601407567743
prp151 factor: 1827307039770485631697914977997588501344573231254422362385934147115233823912404644538564572324353425802174677279775427662043746682841868055017251205519
[/code]

Reserving 11_239_plus_7_239 (14e).

C206_117_106 Factored
 

What a split!

[code]
prp103 factor: 2780822464458191861861643446877902409480527176910508318915567356993761847916923291293985276408249637191
prp103 factor: 4565248962949352653195542080484786963175437049739561799641056703450427874059639839031650823631441282753
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11_239_plus_4_239 factored
 

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p86 factor: 19785843858447313770735963063308951445958307812572317024138874829200729370879708367083
p121 factor: 2307816208449008758213697568741074715828689300026398014740874157782741710050102855761912111320284573952054639845831558587
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C202_139_60 factored
 

111 hours to solve a 11.4M matrix on Core-i5, -t 4 using target_density=120.
[CODE]p51 factor: 147388068319661438413366831801620287613433287707329
p51 factor: 157140489233497279213963368166743505061697028233151
p101 factor: 59421400275352743020674949688576273011762410422169224914767705474318976542052266473925946488731468121[/CODE]