is 2 285839 - 1
has 86047 decimal digits
takes 0.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual267103.953371.6418%50000500000.00050.3949%103.953871.7538%0.1120%
PrimeNet2400.000052.5000%3000800000.000115.0544%0.000159.6508%7.1508%
GPU722440.000056.8182%50001300000.000110.8724%0.000161.5131%4.6949%
Difference+23+103.9533+14.8236%+45000-80000+0.0004-10.4775%+103.9537+10.2407%-4.5829%

Known prime factors (5 factors, 243.9 bits, 0.08532066% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
285839571679619.1251
1
-112.444e-139.908e-92.017e-8
28583920580409824.29536
22 × 32
2008-07-21997.880e-128.918e-81.815e-7
285839445428630491135.37477916
22 × 3 × 43 × 151
2008-07-21431512.986e-84.844e-78.671e-7
2858395681014813470584911408632478.910993743823178534929
3 × 79 × 421 × 6299 × 1581147523
2015-10-2362991581147523323,0550.85361.5942
285839873574984810570882413581992686.175152808921247725272341
72 × 19 × 89 × 127 × 44533 × 326079389
2020-11-144453332607938998,271,8410.17640.3288

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
285839117653876367111443.420
285839254642194049892711754.499
2858399167103395794070411859.669
2858395240640502204158377918392478.794
2858393247716867550050511569174189773098.035
2858391169176083962833469460183715296732103.205
2858394994044737415223514873141384612132105.300
285839179785304795703362835624245092339134110.470
2858392530486648157605440988004037667128735114.285
285839389115309114495140228552651581028875137121.550
285839668393414503788674987528366177102159337122.330
285839102779483260302902762506832810143324348940129.595
2858391446626076532091720898581160249506468087341133.410
28583952078450188122616436158487188840914501638342138.580
285839222449050799265467270718751303191006288292943140.674
2858398008152209737737814415967047572070890367915944145.844
28583929772156325095749241606647797629385161382081705748157.705
2858394578092447110660216007505625788953914534639793796150164.969
2858394962792429386194388813918274182948395636014898573750165.086
28583928371242132390702220027519850666337558688013612017
142423
56184.210
28583910213629797887149947529546297525921880808300174274
02626433
58189.380
28583922105698352276325979223061923200950275784928087929
19445332113
61200.460
28583958389176692263279948537434978233214948986082353288
0106076591007
63208.505
28583912637363528330977759476260817193596052710451904379
27395588017027727
67219.585
28583945494431332047286966973611661180214586431661608517
078488988026374217
68224.755
28583926008211009473460965992507340851843894556665876695
434913506185929586000343
74243.880
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06T15:40:46Lisander ViaeneManual testing5000050000-
skipped known factor: 571679
skipped known factor: 20580409
skipped known factor: 44542863049
--0.000--0.395%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-21T09:15:00J FeitsmaManual testing??24.29586.09288e-140.0041.26680e-13
2008-07-21T09:15:00J FeitsmaManual testing??35.374111.38508e-80.0042.87978e-8


ECM factoring results:
Total ECM effort:18.706 GHz-days
Estimated T-Level:28.734
DigitsB1CompleteFacMiss
201100050.7990.000%
25500007.1630.077%
302500000.74747.386%
3510000000.06194.071%
4030000000.00499.593%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002541.858
500005000000270.198
250000250000001395.084
2500002500000050.183
2500003350000070.285
2500003675000024110.20
2500003678562170.296
25000038500000140.604


Lucas-Lehmer results:
No L-L results for M285839


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T12:29:35Oliver KruseDoppelherz
571679
20580409
44542863049
568101481347058491140863
915DDEC0C441CBFAno
2017-09-24T17:45:26Oliver KruseManual testing
571679
20580409
44542863049
568101481347058491140863
915DDEC0C441CBFAno
2017-09-30T15:29:32alpertronManual testing
571679
20580409
44542863049
568101481347058491140863
915DDEC0C441CB__no
2017-12-07T05:22:49ATHxps
571679
20580409
44542863049
568101481347058491140863
915DDEC0C441CB__no
2020-04-17T22:11:24Oliver KruseAddPrpType5
571679
20580409
44542863049
568101481347058491140863
77DB64D7BD6015__no
2020-11-14T09:51:36Jinyuan WangManual testing
571679
20580409
44542863049
568101481347058491140863
87357498481057088241358199
77DB64D7BD60157Ano
2020-11-15T04:33:48Joe S.VMWare2
571679
20580409
44542863049
568101481347058491140863
87357498481057088241358199
77DB64D7BD60157Ano
2022-05-12T18:25:16Jorge CoveiroManual testing
571679
77DB64D7BD60157Ano


P-1 factor-bounds graph:
B1 = 50000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
2
210
220
230
240
250
260
270
280
290
2100
Last modified: 2022-08-09T15:22:25+00:00