is 2 1217 - 1
has 367 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26724,415.708783.5821%100000000000022328434186491000002,876,234.795343.3652%2,900,650.5040126.9472%54.4472%
PrimeNet2400.000172.5000%500100000.00001.6875%0.000174.1875%1.6875%
GPU722440.001975.0000%500100000.00000.6463%0.001975.6463%0.6463%
Difference+23+24,415.7068+8.5821%+999999999500+2232843418649090000+2,876,234.7953+42.7188%+2,900,650.5021+51.3009%+51.3009%

Known prime factors (3 factors, 395.8 bits, 32.52307416% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
121710457413271029.962429639
3 × 7 × 41 × 499
-414991.173e-71.559e-91.973e-9
121761167732721678433849767778580632139170105573259183
56879
55181.99725130539326901575123158495719240813134800975044857
67

13690409 × 183563101196622943282107172395220720833110063
2011-10-25136904091835631011966229432821071723952207208331100631.241e+142.365e+324.416e+32
121722053390021902056444354293154701006674049109757797
668799
56183.84790605546515620609878201697430981950180974156769916
47

3 × 137 × 503 × 140895565473969308393 × 311062496324160902733961763
2014-05-211408955654739693083933110624963241609027339617631.537e+144.007e+147.484e+14

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
121763965625985949327081337875414752429714594880910154
34016305038433
64211.959
121723062141346352415570147960181744047007555972501287
982767372756273
65213.809
121713489558664666350909215083400593325597948771531529
16605530991595461721676581213506652651276866529157
06725318321
111365.844
121714106588978632537812050237843752136898142016819401
13244988314690663988003772703035717266874338648602
59570077205499951967
120395.806
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-09-07T20:58:12kkmrkkblmbrbkManual testing100000000010000000000012---0.151--14.608%
2021-03-27T16:37:18nordiManual testing10000000000002.2328434186491E+18---2,876,235--43.365%
unknown10000000000002232843418649100000---2,876,235--43.365%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2020-12-22T17:00:38Ruslan BorisovManual testing230251--0.246--
2020-12-22T17:00:38Ruslan BorisovManual testing251252--0.246--
2020-12-22T17:00:39Ruslan BorisovManual testing252253--0.493--
2020-12-22T17:00:39Ruslan BorisovManual testing253254--0.986--
2020-12-22T17:00:39Ruslan BorisovManual testing254255--1.972--
2020-12-22T17:00:39Ruslan BorisovManual testing255256--3.944--
2020-12-22T17:00:39Ruslan BorisovManual testing256257--7.888--


ECM factoring results:
Total ECM effort:2,069,855.365 GHz-days
Estimated T-Level:57.082
DigitsB1CurvesCompleteFacMiss
2011000494364 / 1004,943.6400.000%
2550000494364 / 2801,765.5860.000%
30250000494073 / 640771.9890.000%
351000000493433 / 1580312.2990.000%
403000000491843 / 4700104.6470.000%
451100000061041 / 97006.2930.185%
504400000061041 / 171003.5702.816%
5511000000046895 / 465001.00836.476%
6026000000046632 / 1120000.41665.944%
6580000000033728 / 3600000.09491.057%

ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
10.00000e+0
5000050000002800.005
250000250000006400.054
10000001000000001,5800.538
30000003000000004,7004.797
100000001000000000000426,101472,526
44000000440000000013,690204.9
1000000001000000000000455514.0
2000000002000000000025217.15
260000000260000000009,512841.4
26000000031785598845163,39212,134
80000000080000000000123.266
8500000008500000000015,8684,589
1000000000100000000000217.145
1000000000214000000000125.597
29000000002900000000005,0524,984
29000000008105186204116613211,928
29000000001051012372179128,547999,801
29000000001323843357957408377552,572
76000000007600000000003,6969,557
various45165.8098


Lucas-Lehmer results:
Exponent "1217" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-25T08:10:46csabaofficeF54FFA290FC61C__?
2017-09-27T07:34:22Oliver KruseManual testing
1045741327
61167732721678433849767778580632139170105573259183
56879
22053390021902056444354293154701006674049109757797
668799
F54FFA290FC61C__no
2017-10-09T00:32:41Chang Chia-TchehomuraF54FFA290FC61C__?
2017-10-12T13:27:10kkmrkkblmbrbkManual testing
1045741327
61167732721678433849767778580632139170105573259183
56879
22053390021902056444354293154701006674049109757797
668799
F54FFA290FC61C__no
2020-04-17T12:30:30Oliver KruseIOS-1
1045741327
61167732721678433849767778580632139170105573259183
56879
22053390021902056444354293154701006674049109757797
668799
6A5D96C6B126C44Dno
2020-08-12T10:14:46_p95holder_TFL16_PRPt11-E_b
1045741327
61167732721678433849767778580632139170105573259183
56879
22053390021902056444354293154701006674049109757797
668799
6A5D96C6B126C44Dno


P-1 factor-bounds graph:
B1 = 1000000000000, B2 = 2.2328434186491E+18 (stage 2)
B1 = 1000000000000 (stage 1)
B1 = 1000000000, B2 = 100000000000 (stage 2)
B1 = 1000000000 (stage 1)
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
TF factor-bounds graph:
267
257
256
255
254
253
252
251
220
230
240
250
260
270
280
290
2100
2110
2120
2130
2140
2150
2160
2170
2180
2190
Last modified: 2021-03-27T16:37:18+00:00