is 2 60212377 - 1
has 18125732 decimal digits
takes 133.763 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LCC203487AB0413__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27331.768364.3836%565000115825003.75364.1837%35.521965.8736%1.4901%
PrimeNet2691.982862.3188%260000120000002.89795.6533%4.880764.4491%2.1302%
GPU7227331.768364.3836%400000140000003.67534.1549%35.443665.8634%1.4798%
Difference---+165000-2417500+0.0783+0.0288%+0.0783+0.0103%+0.0103%

Known prime factors (1 factor, 73.6 bits, 0.00012230% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
60212377146913551414045914662472373.637121996139941499
121996139941499
2016-03-01112199613994149945.37821,410,40739,988,678

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-01-26T07:13:00S485122Q67-P56500011582500---3.754--4.184%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-21T00:00:00ANONYMOUSv4_computers21260--0.003--
2009-01-20T12:45:00tmorrowMoo2263264--0.033--
2009-01-21T16:45:00tmorrowMoo2264265--0.062--
2009-02-09T11:41:00sannerud.comv4_computers21270--3.968--
2009-03-02T00:00:00sannerud.comv4_computers21270--3.968--
2012-10-27T05:26:00Zet_kormeganet_i5270271--3.971--
2012-12-27T02:26:00ixfd64Manual testing271272--7.943--
2013-01-01T18:27:00TheJudgerManual testing272273--15.89--
2016-03-01T17:00:26AirSquirrelsManual testing273274*73.6372313.61272.627.73


ECM factoring results:
No ECM results for M60212377


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2013-05-06T18:05:00benbradleyqd1gCC203487AB0413__133.8


PRP results:
No PRP results for M60212377


P-1 factor-bounds graph:
B1 = 565000, B2 = 11582500 (P-1 stage 2)
B1 = 565000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2016-03-01T17:00:26+00:00