Fast Breeding (guru management) - Page 67

jyb · 2016-10-07, 23:59

Quote:

Originally Posted by unconnected

Sorry, I've missed your post here.
These params are auto-adjusted by project, for large prime bound suggested formulae is:
Of course we can choose another params or even another poly.

Sure, but I was less interested in the lpb values than in the mfb values. See VBCurtis's question in post #721.

RichD · 2016-10-08, 00:17

Another one from the Aliquot Sequence farm is a C172 from 3366:i2152. This could be a borderline 14e job. Poly can be found in this post.

unconnected · 2016-10-08, 01:38

Quote:

Originally Posted by jyb

Sure, but I was less interested in the lpb values than in the mfb values. See VBCurtis's question in post #721.

mfbr selected as floor(d/8+31)
I agreed with VBCurtis that using 30/62 is not a good idea. Test sieve on the first poly (93*10^247-1) yields less than 1 relations per special q, so as general rule says we must increase lpbr. As for 31/61 and 31/62 - the second choice is slightly better according to yafu test-sieving.

VBCurtis · 2016-10-08, 04:37

Quote:

Originally Posted by RichD

Another one from the Aliquot Sequence farm is a C172 from 3366:i2152. This could be a borderline 14e job. Poly can be found in this post.

32-bit large primes can extend 14e a couple digits higher. If the 14e queue is in danger of running dry, a GNFS-172 using 32lp should keep 'em busy a few more hours. 325M relations should build a TD=120+ matrix... My last job was GNFS170 with 32lp; 275M relations built a 9.9M matrix at TD = 110.

jyb · 2016-10-08, 05:05

Quote:

Originally Posted by unconnected

mfbr selected as floor(d/8+31)
I agreed with VBCurtis that using 30/62 is not a good idea. Test sieve on the first poly (93*10^247-1) yields less than 1 relations per special q, so as general rule says we must increase lpbr. As for 31/61 and 31/62 - the second choice is slightly better according to yafu test-sieving.

Just to be clear, are you saying that all three of those candidates should change to 31/62?

unconnected · 2016-10-08, 10:11

Yes. The same Lionel previously did for 90007_248 (snfs diff ~250).

pinhodecarlos · 2016-10-13, 09:31

Not sure if you guys have noticed but a lot of 15e wus have been processed lately. The reason is that a SETI.USA member is on a run to get 15e WUProp hours at this application and he is personally going for the 50M total credit badge. Yesterday he processed 30,438 15e tasks!!!!

Stats can be seen here where he is running now fro Anguillan Pirates with support of another member from SETI.USA (the guy who has more than 1000 cores): http://stats.free-dc.org/stats.php?p...fs&subproj=15e

wombatman · 2016-10-13, 19:22

I have a C177 that is the composite cofactor of index 300 of Home Primes 2 4496. It's been ECM'd to an appropriate level, and I have a polynomial that YAFU test-sieved as the best (by a decent margin). The number is:

Code:

397145589955613475013439235701609667353441798511563977176115128602721079082584934175002537268410729912789198795070067707255378330614548148019775226732311063722457616830194857017

and the polynomial, with YAFU's auto-generated parameters, is:

Code:

n: 397145589955613475013439235701609667353441798511563977176115128602721079082584934175002537268410729912789198795070067707255378330614548148019775226732311063722457616830194857017
skew: 61056981.42
c0: -87705157027451135605948428081466371662055575
c1: 8092637031238832558475240359201307030
c2: -56854920149938943747781009090
c3: -4700683018042413724366
c4: 4356445460601
c5: 457272
Y0: -15408310694978335562882021676773902
Y1: 58792877186340341

rlim: 74800000
alim: 74800000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.6
alambda: 2.6

jyb · 2016-10-17, 17:13

Quote:

Originally Posted by wombatman

I have a C177 that is the composite cofactor of index 300 of Home Primes 2 4496. It's been ECM'd to an appropriate level, and I have a polynomial that YAFU test-sieved as the best (by a decent margin).

I've been assuming this was intended for the 15e queue. Is there any chance it could go on the 14e queue, or is it just too big for that?

14e has been getting lots of action over the last few days, and we're pretty much out of candidate numbers. It looks like it'll run dry within a couple of days. There are a few OddPerfect numbers mentioned earlier in this thread, but they all have difficulty under 200, which is pretty low, even for quartics.

Any other suggestions?

swellman · 2016-10-17, 17:39

Four more xyyx candidates for 14e are coming out of ECM to t55 (courtesy of yoyo) and seem ripe for NFS@Home.

C182_133_67
C187_121_102
C187_138_106
C187_138_65

All are best sieved on the -r side. Polys follow.

Code:

n: 31120829278674402088907862189921716000415859214329983991999242802981166234565854290127134666348667759597278170995803247453434699216249129131566465007310318751026507568613227461722127
# 133^67+67^133, difficulty: 244.69, anorm: 1.89e+038, rnorm: 1.41e+046
# scaled difficulty: 246.01, suggest sieving rational side
# size = 2.811e-012, alpha = 0.000, combined = 2.596e-013, rroots = 0
type: snfs
size: 244
skew: 1.1211
c6: 67
c0: 133
Y1: -230339304218442143770717
Y0: 14915769363385151583217201855136979828889
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7

Code:

n: 1843028280827599341501341974513605471989670132570451591173383313362972278541039238659003772121896356477505659273745801307710640280183574929086283848452500762409406005707308054805077389841
# 121^102+102^121, difficulty: 243.04, anorm: 2.02e+037, rnorm: -2.18e+046
# scaled difficulty: 244.55, suggest sieving rational side
# size = 3.875e-012, alpha = 0.000, combined = 3.238e-013, rroots = 0
type: snfs
size: 243
skew: 2.1616
c6: 1
c0: 102
Y1: -14859473959783543420355740092833203224576
Y0: 255476698618765889551019445759400441
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7

Code:

n: 2186020638910258385152172034361284519784305903354849662345862616659849643273153262953028782802961773153257748915890346137820092540847695074409168814066885828558253416757921382978038664189
# 138^106+106^138, difficulty: 248.89, anorm: 8.28e+038, rnorm: -1.91e+047
# scaled difficulty: 250.28, suggest sieving rational side
# size = 1.606e-012, alpha = 0.000, combined = 1.705e-013, rroots = 0
type: snfs
size: 248
skew: 1.7225
c6: 81
c0: 2116
Y1: -145711885893747462508711043263248088053664
Y0: 418950177300470676489160156620147
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7

Code:

n: 1966264348629516208500731258860863102697484146610793831091614823778193533883498675927745031310266782894774999287309088329441907773388454396146694938409389923579275776377929887477146885233
# 138^65+65^138, difficulty: 251.69, anorm: 9.40e+037, rnorm: -5.31e+047
# scaled difficulty: 253.31, suggest sieving rational side
# size = 1.698e-012, alpha = 0.000, combined = 1.751e-013, rroots = 0
type: snfs
size: 251
skew: 1.1366
c6: 32
c0: 69
Y1: -497745340030349688137123548984527587890625
Y0: 172838287549622708499456
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7

swellman · 2016-10-19, 12:27

Here are five more xyyx candidates for 14e which have recently completed ECM to t55, courtesy of yoyo@Home. All are best sieved on the -r side.

C185_133_80
C182_143_60
C183_125_113
C251_127_108
C186_138_79

Code:

n: 13722091000310624201795140587187641080537875189554105422363747742900997526470812706763684133417033174933741616344499573384224294571657097075297490560694340794743509461799606253428284043
# 133^80+80^133, difficulty: 255.01, anorm: 2.38e+039, rnorm: 4.71e+047
# scaled difficulty: 256.40, suggest sieving rational side
# size = 6.395e-013, alpha = 0.000, combined = 8.825e-014, rroots = 0
type: snfs
size: 255
skew: 2.4591
c6: 80
c0: 17689
Y1: -4074471952320023081160213013
Y0: 737869762948382064640000000000000000000000
rlim: 268000000
alim: 268000000
lpbr: 32
lpba: 32
mfbr: 64
mfba: 64
rlambda: 2.8
alambda: 2.8

Code:

n: 11862526390071326883344234714193955160782206227461069057799160927015149217906886232276658117165621227689969269541473119940535785286386657978431675057072593758922223565722771937148457
# 143^60+60^143, difficulty: 256.05, anorm: 1.55e+037, rnorm: 3.37e+048
# scaled difficulty: 257.94, suggest sieving rational side
# size = 1.250e-012, alpha = 0.000, combined = 1.378e-013, rroots = 0
type: snfs
size: 256
skew: 1.9786
c6: 1
c0: 60
Y1: -3575694237941010577249
Y0: 4738381338321616896000000000000000000000000
rlim: 268000000
alim: 268000000
lpbr: 32
lpba: 32
mfbr: 64
mfba: 64
rlambda: 2.8
alambda: 2.8

Code:

n: 281556229300682809031589437135876261757821675116218872912951317247205849735020234479515318620826233047023079669104744082362537371203565188570900330239995726847086534373094022172036839
# 125^113+113^125, difficulty: 258.69, anorm: 2.38e+038, rnorm: 5.87e+048
# scaled difficulty: 260.42, suggest sieving rational side
# size = 7.556e-013, alpha = 0.000, combined = 9.614e-014, rroots = 0
type: snfs
size: 258
skew: 4.9166
c6: 1
c0: 14125
Y1: -1387778780781445675529539585113525390625
Y0: 13021089174137413266744892374538813705886513
rlim: 268000000
alim: 268000000
lpbr: 32
lpba: 32
mfbr: 64
mfba: 64
rlambda: 2.8
alambda: 2.8

Code:

n: 84565333603413803335145842882884582536809152158802315032316563647830654840760103499719424595338849795779517144838526327422778026487083496730685356014797826844594396468824081048193381869614344376003423589667588712054349404954241001171364234129668752989
# 127^108+108^127, difficulty: 258.24, anorm: 2.08e+037, rnorm: -7.44e+048
# scaled difficulty: 260.17, suggest sieving rational side
# size = 7.027e-013, alpha = 0.000, combined = 9.106e-014, rroots = 0
type: snfs
size: 258
skew: 2.1822
c6: 1
c0: 108
Y1: -5033833715357246216627938504760415284625408
Y0: 73869809188743794269800200736680064769
rlim: 268000000
alim: 268000000
lpbr: 32
lpba: 32
mfbr: 64
mfba: 64
rlambda: 2.8
alambda: 2.8

Code:

n: 244149295746459609383182707672945605934866148159692262015063372304614785491334631066357433184924118470576597120465566125221006344131333837207627330533731575134387807353334352116171467097
# 138^79+79^138, difficulty: 261.87, anorm: 2.35e+037, rnorm: 2.93e+049
# scaled difficulty: 263.89, suggest sieving rational side
# size = 6.160e-013, alpha = 0.000, combined = 8.130e-014, rroots = 0
type: snfs
size: 261
skew: 2.2732
c6: 1
c0: 138
Y1: -6583064696190029721327280128
Y0: 44200084506410989454600861862443675119534639
rlim: 268000000
alim: 268000000
lpbr: 32
lpba: 32
mfbr: 64
mfba: 64
rlambda: 2.8
alambda: 2.8

2016-10-13, 09:31	#733
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3×17×97 Posts	Not sure if you guys have noticed but a lot of 15e wus have been processed lately. The reason is that a SETI.USA member is on a run to get 15e WUProp hours at this application and he is personally going for the 50M total credit badge. Yesterday he processed 30,438 15e tasks!!!! Stats can be seen here where he is running now fro Anguillan Pirates with support of another member from SETI.USA (the guy who has more than 1000 cores): http://stats.free-dc.org/stats.php?p...fs&subproj=15e Last fiddled with by pinhodecarlos on 2016-10-13 at 09:33

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2016-10-08, 00:17	#728
RichD Sep 2008 Kansas 3×1,129 Posts	Another one from the Aliquot Sequence farm is a C172 from 3366:i2152. This could be a borderline 14e job. Poly can be found in this post.

2016-10-08, 10:11	#732
unconnected May 2009 Russia, Moscow 2,593 Posts	Yes. The same Lionel previously did for 90007_248 (snfs diff ~250).