is 281408911-1
has 24,506,525 decimal digits
takes 254.035 GHz-days to do one L-L 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
Actual27593.993564.0000%690,00013,800,0006.35393.7935%100.347467.7935%5.8217%
PrimeNet2715.872661.9718%340,00016,000,0005.39895.2580%11.271467.2298%5.2580%
GPU7227593.993564.0000%550,00018,000,0006.79033.8831%100.783867.8831%3.8831%
Difference---+140,000-4,200,000-0.4364-0.0896%-0.4364-0.0896%-0.0896%

Known prime factors (1 factor, 128.6 bits, 0.00015797% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
8140891151591562111328458996505429124470020420139128.6003168667992090476372820257301100
22 × 52 × 59 × 109 × 15559 × 35863 × 58451 × 120331 × 1255453
120,3311,255,4532017-06-051.676e+90.82431.1081

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-06-06T00:35:30BruceDesk6690,00013,800,00039128.6006.354508.112.713.794%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-06T15:20:00For Researchm1_67264265--0.046--
2011-02-21T07:30:00searchingforprimesSuperP6T7265266--0.092--
2013-01-30T09:35:00phoenicisManual testing266267--0.184--
2013-02-15T16:28:00Simon HarrisonManual testing267268--0.367--
2013-02-19T10:29:00ITSCP-CP-1268269--0.734--
2013-02-20T15:48:00Gnorfe_k_kontor269270--1.469--
2013-06-08T16:54:00processinfoManual testing270271--2.937--
2016-09-25T01:55:19Judge HaleManual testing271272--5.875--
2016-09-25T01:55:19Judge HaleManual testing272273--11.75--
2016-11-07T00:49:21TheJudgerManual testing273274--23.50--
2016-11-07T00:49:21TheJudgerManual testing274275--47.00--


ECM factoring results:
Exponent "81408911" not found


Lucas-Lehmer results:
Exponent "81408911" not found


PRP results:
Exponent "81408911" not found


P-1 factor-bounds graph:
B1 = 690,000, B2 = 13,800,000 (stage 2)
B1 = 690,000 (stage 1)
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TF factor-bounds graph:
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Last modified: 2017-06-06T00:35:30+00:00