is 2 81180523 - 1
has 24437773 decimal digits
takes 253.323 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LFDD62D295CC84B__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27594.257964.0000%685000137000006.30793.7833%100.565865.3620%1.3620%
PrimeNet2715.889161.9718%340000160000005.39895.2562%11.288063.9707%1.9988%
GPU7227594.257964.0000%550000180000006.79033.8817%101.048365.3974%1.3974%
Difference---+135000-4300000-0.4825-0.0984%-0.4825-0.0354%-0.0354%

Known prime factors:
No known factors for M81180523

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-05-01T21:31:49arnaudSPR02685000137000006---6.308--3.783%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-10T15:20:00Architects Cubedm1_78264265--0.046--
2011-02-17T18:17:00steinrarManual testing265267--0.276--
2011-02-17T18:17:00steinrarManual testing267268--0.368--
2011-02-17T18:17:00steinrarManual testing268269--0.736--
2011-02-17T18:17:00steinrarManual testing269270--1.473--
2011-02-17T18:17:00steinrarManual testing270271--2.946--
2014-01-23T14:10:00rlakeManual testing271272--5.891--
2016-10-11T19:55:07Judge HaleManual testing272273--11.78--
2016-11-06T16:53:31ANONYMOUSManual testing273274--23.57--
2016-11-06T16:53:31ANONYMOUSManual testing274275--47.13--


ECM factoring results:
No ECM results for M81180523


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2018-09-05T10:15:29arnaudSRV-410FDD62D295CC84B__253.3


PRP results:
No PRP results for M81180523


P-1 factor-bounds graph:
B1 = 685000, B2 = 13700000 (P-1 stage 2)
B1 = 685000 (P-1 stage 1)
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108
TF factor-bounds graph:
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Last modified: 2018-09-05T10:15:29+00:00