is 2 1984013 - 1
has 597248 decimal digits
takes 0.130 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA56412E01B233B76double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26714.976768.6567%19840131984013001.20948.9238%16.186171.4537%2.7970%
PrimeNet2580.019463.7931%80001400000.00142.4750%0.020864.6892%0.8961%
GPU722620.309766.1290%80001000000.00121.1977%0.310966.5347%0.4057%
Difference+5+14.6670+2.5277%+1976013+198301300+1.2082+7.7261%+15.8752+4.9190%+4.9190%

Known prime factors (1 factor, 72.9 bits, 0.00367673% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
198401391028906939884418916892272.9472294060244057988
22 × 7 × 29 × 59 × 47884700761
2018-07-155947884700761572.60248.73464.55

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-01-21T22:41:00kurlyhex100000030000000---0.246--6.248%
2018-01-21T01:09:51Jocelyn Larouchelow 4M12057601205760---0.115--2.851%
2018-01-27T10:55:56Jocelyn Larouchelow 4M19840133000000012---0.335--6.622%
2018-02-15T13:14:27Jocelyn Larouchelow 4M19840136000000012---0.491--7.463%
2018-03-11T02:36:11Jocelyn Larouchelow 4M198401312000000012---0.802--8.308%
2018-05-21T11:06:49Jocelyn Larouchelow 4M198401319840130012---1.209--8.924%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-12-27T00:00:00ANONYMOUSv4_computers21258--0.019--
2016-02-23T16:29:02Mark RoseManual testing258260--0.058--
2009-12-17T03:53:00S485122USB-W260261--0.077--
2016-02-23T16:29:02Mark RoseManual testing261262--0.155--
2011-07-01T19:06:00GrunwalderGIMPManual testing21263--0.804--
2016-02-23T16:29:02Mark RoseManual testing262263--0.495--
2015-03-13T07:58:00lycornManual testing263264--0.990--
2015-03-13T07:59:00lycornManual testing264265--1.883--
2015-09-11T08:33:00ramgeisManual testing265266--3.766--
2018-01-08T13:22:29TJAOIManual testing266267--7.533--


ECM factoring results:

Old Calculation Method

Total ECM effort:3.380 GHz-days
Estimated T-Level:2.000
DigitsB1CurvesCompleteFacMiss
201100040 / 1000.40066.897%
255000040 / 2800.14386.666%

New Calculation Method

Total ECM effort:3.380 GHz-days
Estimated T-Level:2.000
DigitsB1CompleteFacMiss
20110001.29027.518%
25500000.11788.993%
302500000.00799.284%


ECM Summary

B1B2factorcurvesGHz-days
500005000000393.296
50000500000010.085


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-02T00:00:00ANONYMOUSv4_computersA56412E01B233B760.130
2015-07-12T18:10:00MadPooManual testingA56412E01B233B760.130


PRP results:
dateuseridcompidcofactorsres64PRP
2018-07-18T09:00:45Justine V.Gible_Desktop_1
9102890693988441891689
92C6BC068C1AD9__no
2018-07-28T18:37:21Oliver KruseGTX-5
9102890693988441891689
92C6BC068C1AD9__no


P-1 factor-bounds graph:
B1 = 1984013, B2 = 198401300 (P-1 stage 2)
B1 = 1984013, B2 = 120000000 (P-1 stage 2)
B1 = 1984013, B2 = 60000000 (P-1 stage 2)
B1 = 1984013, B2 = 30000000 (P-1 stage 2)
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1984013 (P-1 stage 1)
B1 = 1205760 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2018-07-28T18:37:21+00:00