is 2 81180581 - 1
has 24437790 decimal digits
takes 253.323 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27594.257964.0000%675000128250006.04943.7262%100.307265.3414%1.3414%
PrimeNet2715.889161.9718%340000160000005.39895.2562%11.288063.9707%1.9988%
GPU7227594.257964.0000%550000180000006.79033.8817%101.048265.3974%1.3974%
Difference---+125000-5175000-0.7410-0.1555%-0.7410-0.0560%-0.0560%

Known prime factors (1 factor, 76.4 bits, 0.00009407% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
81180581972466098414577629068412376.364598952413517820
22 × 3 × 5 × 19 × 67 × 2663 × 2944703
2017-04-3026632944703247.280.73731.3558

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-04-30T05:25:41Jwb52zClay675000128250002376.3646.049506.612.103.726%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-12T13:30:00Architects Cubedm1_13264265--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--
2016-10-12T05:55:08Judge 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 M81180581


Lucas-Lehmer results:
No L-L results for M81180581


PRP results:
No PRP results for M81180581


P-1 factor-bounds graph:
B1 = 675000, B2 = 12825000 (P-1 stage 2)
B1 = 675000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2017-04-30T05:25:41+00:00