Another composite stub has appeared after yoyo@Home found a p51, namely C173_129_85.

[code]16432623607473574219758563585400708524378818125206904056185988551457839250312821323878324356918801650702586763199236947949550568517635374514910417505008392250111636215513873[/code]

The best e-score [url=http://www.mersenneforum.org/showpost.php?p=457286&postcount=59]found to date for a C173 is 2.523e-13[/url]. Thank you in advance for any assistance.

I've got this one started, but it'll probably take a bit longer. Figure maybe a week or so since I'm still CPU-limited.

[QUOTE=wombatman;465188]I've got this one started, but it'll probably take a bit longer. Figure maybe a week or so since I'm still CPU-limited.[/QUOTE]

No worry, no hurry. Yes it's bigger than previous efforts - probably a15/31 or 14/32(?)

Many thanks.

Here's your top 5:
[CODE]expecting poly E from 2.28e-013 to > 2.62e-013
# norm 8.440626e-017 alpha -7.132528 e 2.296e-013 rroots 3
skew: 5870867.97
c0: 25419121017344360577864617013788268281760
c1: 28857530855456147761173668461688476
c2: 631397788691506677770489927
c3: -2664694777806407733134
c4: 223010337756792
c5: 14302440
Y0: -1028156805787591556952709321595503
Y1: 7449870672504553

# norm 8.320851e-017 alpha -8.231933 e 2.271e-013 rroots 3
skew: 12904282.66
c0: -1150934747285608316962857534773996125346343
c1: 173652387910755825681661412520646843
c2: 4780773520911007250829480037
c3: -5064488460937917321623
c4: 126600418211406
c5: 15679440
Y0: -1009427825229578281484617599850210
Y1: 210906019054079

# norm 8.297967e-017 alpha -7.147615 e 2.268e-013 rroots 5
skew: 4740348.12
c0: -11332970789387295554547605633945914088141
c1: 40828438486762651790498409385406658
c2: 1181957448419951659840978285
c3: -4067744522092936616538
c4: -79376394211544
c5: 69003480
Y0: -750528490225785861809513235097068
Y1: 226581643193251

# norm 8.337114e-017 alpha -8.023503 e 2.266e-013 rroots 5
skew: 116090672.55
c0: 93319974328104984254067869680565293783369851
c1: 11288436999125462157292955679207429131
c2: 128406577117225910134353845749
c3: -2214543160980294628399
c4: -6671948805792
c5: 49140
Y0: -3197822479576527143000165566630022
Y1: 1754259244774553

# norm 8.331280e-017 alpha -7.830622 e 2.260e-013 rroots 3
skew: 3894145.00
c0: -2429258440797216327643051795869441584925
c1: 25597581093779534750210133070169100
c2: -31867746875220883735477448019
c3: -3901741036297016335728
c4: 921438591865892
c5: 124452240
Y0: -667023043995647574472056027721532
Y1: 12125946226643243[/CODE]

Thank you! I'll run some test sieving tonight.

top 10 polys for C172_146_97
 

@swellman
That should be enough. Happy test-sieving!
[code]
R0: -1580449837730585778276683181839623
R1: 628496539689113733197
A0: 991834780948194543991887971239482751691040
A1: 572326646054572174299171725001398778
A2: 1934877978873866669654342727
A3: -2069560651005489103571
A4: 12064175741450
A5: 1187400
skew 25160967.71, size 1.201e-016, alpha -8.977, combined = 3.255e-013 rroots = 3
[/code][code]
Y0: -1580452267283890896356387938421446
Y1: 628496539689113733197
c0: -1070452603608889346419692596413527454013316
c1: 463127333726962033995592404275091039
c2: 26331287402241040443773286294
c3: -2078667633341727971771
c4: -10886241741550
c5: 1187400
skew: 25237649.56844
# lognorm 54.96, E 45.98, alpha -8.98 (proj -2.01), 3 real roots
# MurphyE=3.25113731e-13
[/code][code]
# norm 1.226222e-016 alpha -8.316715 e 2.911e-013 rroots 5
skew: 23101572.13
c0: -239216842842472714148470965730926297549960
c1: 401787029698782335463288821670588258
c2: -29342154914931579139456885863
c3: -1389406222471648009571
c4: 46525076651450
c5: 1187400
Y0: -1580446189666415910594256801176913
Y1: 628496539689113733197
[/code][code]
Y0: -1580443122996741061564623996798235
Y1: 628496539689113733197
c0: 890915226978681987144610920612912006557040
c1: 41190659958873526202007037874084346
c2: -41654960139820089243885254325
c3: -198653582064383616371
c4: 75493920089450
c5: 1187400
skew: 22467850.39719
# lognorm 54.82, E 46.50, alpha -8.32 (proj -2.01), 5 real roots
# MurphyE=2.90369708e-13
[/code][code]
# norm 1.198419e-016 alpha -8.275761 e 2.870e-013 rroots 5
skew: 24160908.81
c0: 538606931016171090659938680304828460772810
c1: 462196856824379512382945687825059587
c2: -24324197751031616143065533484
c3: -1583483281491074244971
c4: 39855551780450
c5: 1187400
Y0: -1580446895708744156169909741222364
Y1: 628496539689113733197
[/code][code]
Y0: -1580445758677427804943270716266951
Y1: 628496539689113733197
c0: 1286242695060463761302161765348192852438320
c1: 359645226224536849458017901917252682
c2: -32065395352515768160672557561
c3: -1256204961894396098771
c4: 50596350653450
c5: 1187400
skew: 23922501.64720
# lognorm 54.95, E 46.67, alpha -8.28 (proj -2.01), 5 real roots
# MurphyE=2.86947757e-13
[/code][code]
# norm 1.172340e-016 alpha -8.194264 e 2.830e-013 rroots 5
skew: 23435214.10
c0: -66409601560577307041988820212610555781570
c1: 420308194807723742642323362453393259
c2: -27966527752471222946773958760
c3: -1448301193046593055371
c4: 44606647904450
c5: 1187400
Y0: -1580446392753131276877266522856720
Y1: 628496539689113733197
[/code][code]
# norm 1.172340e-016 alpha -8.194264 e 2.829e-013 rroots 5
skew: 23462204.80
c0: -89599055276981960324146817437173371244950
c1: 423369787194318814481483536030727707
c2: -27726872898901411201429814124
c3: -1458073777353617540971
c4: 44280279140450
c5: 1187400
Y0: -1580446427302843056667226664162204
Y1: 628496539689113733197
[/code][code]
# norm 1.172793e-016 alpha -8.199688 e 2.824e-013 rroots 5
skew: 24684184.17
c0: 1365648834147548290821548241429238265950360
c1: 494049276993912777200225273214435922
c2: -20863929132902519803448090841
c3: -1689875950596659170771
c4: 35674057373450
c5: 1187400
Y0: -1580447338365770521149292282934631
Y1: 628496539689113733197
[/code][code]
# norm 1.154107e-016 alpha -8.162302 e 2.801e-013 rroots 5
skew: 24103038.14
c0: 474296015812927369244590967296520526533910
c1: 458880886695842890527103466435615403
c2: -24644778990287535226441546992
c3: -1572633399601281092171
c4: 40257581672450
c5: 1187400
Y0: -1580446853149472474581884184054312
Y1: 628496539689113733197
[/code]

Hi Max (or anyone else),

Would you be willing to have a short go at finding a poly for the C153 of Aliquot sequence 434040 i3059?

[CODE]193772627436498719691399371635139917650415631165444129989632973066769346863702474240220073470345031874593997015736878532869569858946276674743265111984081[/CODE]

I am running a CPU search on this number, but my last CPU search for a C155 resulted in a decidedly sub-par poly.

Thanks very much if you can help me!

@richs
I am on it. Your (good) poly will be ready tomorrow.

C153 poly
 

@richs
The best one so far:
[code]
Y0: -282787113951487245345835048089
Y1: 1435536248976675884833
c0: 442884125356942430323280122820488080
c1: 2925904414556199775520911330918
c2: -2902141208924692390138817
c3: -1962914610746328803
c4: 1346269138452
c5: 636120
skew: 1506654.35651
# lognorm 47.37, E 40.56, alpha -6.81 (proj -1.82), 1 real root
# MurphyE=4.00018100e-12
[/code]

[QUOTE=richs;466611]Hi Max (or anyone else),

Would you be willing to have a short go at finding a poly for the C153 of Aliquot sequence 434040 i3059?

[CODE]193772627436498719691399371635139917650415631165444129989632973066769346863702474240220073470345031874593997015736878532869569858946276674743265111984081[/CODE]

I am running a CPU search on this number, but my last CPU search for a C155 resulted in a decidedly sub-par poly.

Thanks very much if you can help me![/QUOTE]

I'll run a GPU search as well.

@wombatman
It will be a new record if we raise MurphyE to >=4.2e-12. My final poly will be ready in 3 hours. If you have good hits, feel free to drop them here. I'll CADO them as well.