is 2 168374279 - 1
has 50685709 decimal digits
takes 1,145.881 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
Actual277181.786563.6364%----181.786563.6364%0.0000%
PrimeNet27422.722462.1622%7000004000000028.03685.5275%50.759264.2536%2.0915%
GPU72278363.574064.1026%10000004000000030.83603.9980%394.410065.5377%1.4352%
Difference-1-181.7875-0.4662%-1000000-40000000-30.8360-3.9980%-212.6235-1.9014%-1.9014%

Known prime factors:
No known factors for M168374279

P-1 results:
No P-1 results for M168374279


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-07-08T12:51:00Carsten Kossendeyleela263264--0.012--
2011-02-18T16:30:00Richardworkmy264265--0.022--
2013-03-23T18:37:00firereddont1265266--0.044--
2015-06-04T17:20:00SummyGR-PC08266267--0.089--
2016-03-31T14:12:25XZTManual testing267268--0.178--
2017-04-28T02:13:55Andrew BManual testing268269--0.355--
2018-02-20T11:00:22ZenghuiManual testing269270--0.710--
2018-02-20T16:21:05ZenghuiManual testing269270--0.710--
2018-03-19T08:09:58Ruediger EckhardManual testing270271--1.420--
2018-02-27T05:32:31ZenghuiManual testing270271--1.420--
2018-03-19T08:09:58Ruediger EckhardManual testing271272--2.840--
2018-03-19T08:09:58Ruediger EckhardManual testing272273--5.681--
2021-12-16T15:38:00SRBaseManual testing273274--11.36--
2022-04-05T20:55:03Tucker KaoManual testing274275--22.72--
2022-04-05T20:55:03Tucker KaoManual testing275276--45.45--
2022-05-12T23:04:02Tucker KaoManual testing276277--90.89--


ECM factoring results:
No ECM results for M168374279


Lucas-Lehmer results:
No L-L results for M168374279


PRP results:
No PRP results for M168374279


TF factor-bounds graph:
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Last modified: 2022-05-12T23:04:02+00:00