is 281990457-1
has 24,681,587 decimal digits
takes 255.850 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
Actual27593.326864.0000%720,00014,040,0006.54143.8294%99.868267.8294%5.8576%
PrimeNet2715.830961.9718%340,00016,000,0005.39895.2625%11.229867.2343%5.2625%
GPU7227593.326864.0000%550,00018,000,0006.79033.8865%100.117267.8865%3.8865%
Difference---+170,000-3,960,000-0.2489-0.0571%-0.2489-0.0571%-0.0571%

Known prime factors (1 factor, 126.4 bits, 0.00015411% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
8199045710890279874757343868806862562385078144139126.356664118744621544423688653336960
27 × 33 × 5 × 47 × 373 × 4139 × 482527 × 609923 × 1799713
609,9231,799,7132016-09-181.962e+93.05305.6165

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-09-18T18:42:53TheJudgerManual testing720,00014,040,00039126.3566.541511.713.083.829%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-16T14:30:00For Researchm1_73264265--0.046--
2011-03-07T18:04:00MarzbugLaptop_II265266--0.091--
2011-03-08T04:42:00ACAC1266267--0.182--
2011-03-13T17:54:00opyrtManual testing267268--0.365--
2011-03-13T17:54:00opyrtManual testing268269--0.729--
2011-03-13T17:54:00opyrtManual testing269270--1.458--
2011-03-13T17:54:00opyrtManual testing270271--2.917--
2016-07-06T06:17:58Son JohanManual testing271272--5.833--
2016-07-06T06:17:58Son JohanManual testing272273--11.67--
2016-08-22T20:45:23Sid & AndyManual testing273274--23.33--
2016-08-22T20:45:23Sid & AndyManual testing274275--46.66--


ECM factoring results:
Exponent "81990457" not found


Lucas-Lehmer results:
Exponent "81990457" not found


PRP results:
Exponent "81990457" not found


P-1 factor-bounds graph:
B1 = 720,000, B2 = 14,040,000 (stage 2)
B1 = 720,000 (stage 1)
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TF factor-bounds graph:
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Last modified: 2016-09-18T18:42:53+00:00