is 2 8180143 - 1
has 2462469 decimal digits
takes 2.136 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LF3D91AF53091D2C5double-checked
PRP7240618DE58039__
unverified PRP test

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272116.909268.0556%150000080057835017.05117.9794%133.960370.6045%2.5490%
PrimeNet2630.195163.4921%360009000000.03153.6184%0.226664.8131%1.3210%
GPU722673.632465.6716%5500013000000.04652.6254%3.678966.5729%0.9013%
Difference+5+113.2767+2.3839%+1445000+799278350+17.0046+5.3540%+130.2813+4.0316%+1.6477%

Known prime factors (2 factors, 210.4 bits, 0.00257194% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
818014334723501649112426272420712581.522212242632244402245
3 × 5 × 23 × 67 × 176021 × 52164403
2022-01-221760215216440393,1071.13902.0097
818014362014641620640803565726169892555021374339128.86637905597506449950548374380431097
32 × 1427 × 3313 × 10333 × 451097 × 612341 × 312122963
2022-01-226123413121229632.109e+106.657612.025

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
818014321533655105834370500440926038187871302357315547641
89688651981753
64210.388
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-11-24T00:00:00ANONYMOUSv4_computers45000573750---0.028--1.042%
2012-11-17T23:01:00NesowaEPC1000001975000---0.077--1.788%
2022-01-22T20:14:03FlaukrotistColab_AK2150000080057835064210.38817.054.27234.107.979%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-08-30T00:00:00ANONYMOUSv4_computers21261--0.038--
1998-09-13T00:00:00ANONYMOUSv4_computers21262--0.075--
1999-09-22T00:00:00ANONYMOUSv4_computers21262--0.075--
1999-02-21T00:00:00korvav4_computers21263--0.195--
2013-08-26T22:49:00David CampeauManual testing263264--0.240--
2013-12-28T04:46:00David CampeauManual testing264265--0.457--
2015-05-28T11:05:00snme2pm1Manual testing265266--0.914--
2015-12-07T20:29:06snme2pm1Manual testing266267--1.827--
2018-07-09T05:27:59chuenkitManual testing267268--3.654--
2020-01-17T11:06:06TJAOIManual testing268269--7.308--
2021-08-19T15:54:32SRBaseManual testing269270--14.62--
2021-08-26T16:10:14SRBaseManual testing270271--29.23--
2021-10-05T16:22:24SRBaseManual testing271272--58.47--


ECM factoring results:
Total ECM effort:2.382 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000062.382


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-03-22T00:00:00ANONYMOUSv4_computersF3D91AF53091D2C52.136
2002-12-31T00:00:00ANONYMOUSv4_computersF3D91AF53091D2C52.136


PRP results:
dateuseridcompidcofactorsres64PRP
2022-01-22T23:33:41FlaukrotistLenovo
3472350164911242627242071
620146416206408035657261698925550213743
7240618DE58039__no


P-1 factor-bounds graph:
B1 = 1500000, B2 = 800578350 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 100000, B2 = 1975000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 45000, B2 = 573750 (P-1 stage 2)
B1 = 45000 (P-1 stage 1)
103
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106
107
103
104
105
106
107
108
109
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
261
250
260
270
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290
2100
2110
2120
2130
Last modified: 2022-01-22T23:33:41+00:00