is 2 185371 - 1
has 55803 decimal digits
takes 0.001 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
Actual267160.294373.1343%10000000020000000001.360712.2633%161.655176.4289%3.2946%
PrimeNet2400.000055.0000%2000450000.000012.0850%0.000060.4382%5.4382%
GPU722440.000059.0909%3400700000.00008.4182%0.000162.5347%3.4438%
Difference+23+160.2943+14.0434%+99996600+1999930000+1.3607+3.8451%+161.6550+13.8942%+13.8942%

Known prime factors (5 factors, 282.7 bits, 0.15250734% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
185371144533768711133.75138985
3 × 5 × 23 × 113
-231138.879e-91.866e-73.130e-7
1853711278904499783291546.862344958084
22 × 32 × 17 × 563657
2008-08-26175636576.331e-50.00020.0004
18537124710645604070311651.1346665186465
5 × 7 × 31 × 67 × 277 × 331
2008-08-262773310.00171.872e-63.769e-6
1853716221969125189863591859.1101678247710049
53 × 179 × 7309 × 24203
2008-08-267309242030.45455.502e-59.946e-5
18537144553125067830397569062679772891.84812017285623919166851628
22 × 32 × 2441 × 136752760980463003
2020-02-0924411367527609804630033.823e+949,815,99293,042,400

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
18537118484488717385628198285592580.613
185371357152273641347642011800012684.885
18537189928464646095277895351026892892.861
1853713160255585559569376653692311993097.996
1853717957304311718016970517259661411132105.972
185371153748874012034095034785257669012934110.244
1853716439431073861501743754251609369975996738125.598
185371456763649867752416212463638388667819832940131.747
18537156979192128655992954413796482720391667043342138.709
185371115009918094493760755659649696540483962668143139.723
1853711100936484104977945731050149512091028094628744142.982
1853712222190419587826564839181183645086422260635944143.995
185371277208168602763280682280321512291614566152574346150.958
18537119663012681060453980626661383157179517859821444148157.106
18537182354173764058178488286332344665206008050476517551
43
52172.460
18537115912249915802947376794253417499148400309517651912
7977
54176.732
18537140065941325354471877013514984841993641776763168447
290153
56184.708
18537114079926234974508217258060553173101423390818235607
63014423
58189.844
18537128419693269861886531634926972127284740103007468034
47594111
58190.857
18537135452277420275888988142654288685958270598935916622
3425623447
60197.820
18537168499928128962537903786686337381865468506897007397
24564699033
61202.092
18537120350248018996666834191709543754956977217403068029
635015773627610433
68223.594
18537151240512649049108034018463274464258625074581969452
05504324317625094337
70231.570
18537199005527688430945056405131562644675705735116411069
446614331546638265743
71235.842
18537187604866318962150631745888607836573169894054798116
7410950682873893257255857
75248.954
18537112661861486415344566652940647538475160016458851395
070801013551971184614144656493083447
86282.704
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-05-26T18:28:58kkmrkkblmbrbkManual testing100000000200000000012-
skipped known factor: 14453376871
skipped known factor: 127890449978329
skipped known factor: 2471064560407031
skipped known factor: 622196912518986359
--1.361--12.263%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-08-26T20:12:00ANONYMOUSManual testing??46.862151.27413e-50.0022.64191e-5
2008-08-26T20:12:00ANONYMOUSManual testing??51.134168.58175e-50.0020.000


ECM factoring results:

Old Calculation Method

Total ECM effort:12.987 GHz-days
Estimated T-Level:28.727
DigitsB1CurvesCompleteFacMiss
2011000758 / 1007.5800.049%
2550000758 / 2802.7076.640%
30250000477 / 6400.74547.431%

New Calculation Method

Total ECM effort:12.987 GHz-days
Estimated T-Level:28.727
DigitsB1CompleteFacMiss
201100048.8150.000%
25500006.5660.141%
302500000.67151.133%
3510000000.05494.751%
4030000000.00499.646%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002811.369
2500002500000047411.55
2500002500000030.073


Lucas-Lehmer results:
No L-L results for M185371


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T01:09:45Oliver KruseDoppelherz
14453376871
127890449978329
2471064560407031
622196912518986359
396610C4F61B4405no
2017-09-22T10:02:12Oliver KruseManual testing
14453376871
127890449978329
2471064560407031
622196912518986359
396610C4F61B4405no
2017-09-22T10:05:26Oliver KruseManual testing
14453376871
127890449978329
2471064560407031
622196912518986359
396610C4F61B4405no
2017-11-06T15:53:25kkmrkkblmbrbkc4.xlarge
14453376871
127890449978329
2471064560407031
622196912518986359
396610C4F61B44__no
2020-02-10T00:21:00mrh.orgw
14453376871
127890449978329
2471064560407031
622196912518986359
4455312506783039756906267977
0D1E4A190D202CC5no
2020-02-10T05:08:52Jinyuan WangManual testing
14453376871
127890449978329
2471064560407031
622196912518986359
4455312506783039756906267977
0D1E4A190D202CC5no
2020-02-11T08:07:02Luigi Morelli9800X
14453376871
127890449978329
2471064560407031
622196912518986359
4455312506783039756906267977
0D1E4A190D202CC5no


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
100
101
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108
100
101
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103
104
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109
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1016
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TF factor-bounds graph:
267
2
230
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250
260
270
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2100
Last modified: 2020-03-06T21:17:51+00:00