is 2 81180653 - 1
has 24437812 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-L3FEF1414834DFA__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27594.257864.0000%690000139725006.39643.8018%100.654265.3686%1.3686%
PrimeNet2715.889161.9718%340000160000005.39895.2562%11.287963.9707%1.9988%
GPU7227594.257864.0000%550000180000006.79033.8817%101.048165.3974%1.3974%
Difference---+140000-4027500-0.3939-0.0800%-0.3939-0.0288%-0.0288%

Known prime factors:
No known factors for M81180653

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-05-12T08:49:08David HruskaDesktopIIc6900001397250012---6.396--3.802%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-12T12:20:00Architects Cubedm1_57264265--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--
2016-10-11T13:55:27Judge HaleManual testing272273--11.78--
2016-11-06T16:53:31ANONYMOUSManual testing273274--23.56--
2016-11-06T16:53:31ANONYMOUSManual testing274275--47.13--


ECM factoring results:
No ECM results for M81180653


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2018-09-24T02:46:37curtiscwcm201--38l3FEF1414834DFA__253.3


PRP results:
No PRP results for M81180653


P-1 factor-bounds graph:
B1 = 690000, B2 = 13972500 (P-1 stage 2)
B1 = 690000 (P-1 stage 1)
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108
TF factor-bounds graph:
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2100
Last modified: 2018-09-24T02:46:37+00:00