is 2 59636581 - 1
has 17952400 decimal digits
takes 132.484 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7DB966AFC9809CF7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27464.153064.8649%565000115825003.75363.7902%67.906666.1966%1.3317%
PrimeNet2692.001962.3188%260000120000002.89795.6466%4.899864.4466%2.1277%
GPU7227332.075064.3836%400000140000003.67534.1499%35.750365.8616%1.4780%
Difference+1+32.0780+0.4813%+165000-2417500+0.0783-0.3597%+32.1563+0.3350%+0.3350%

Known prime factors:
No known factors for M59636581

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-02-06T10:53:00Jerry HallettTF256500011582500---3.754--3.790%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-23T00:00:00ANONYMOUSv4_computers21253--2.01206e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers21254--4.02412e-5--
2000-06-28T00:00:00ANONYMOUSv4_computers21256--0.000--
2000-06-29T00:00:00ANONYMOUSv4_computers21256--0.000--
2016-02-23T17:06:03Mark RoseManual testing256263--0.027--
2008-03-31T19:50:00monstguinness263264--0.033--
2008-11-15T07:09:00lindedLKAH998264265--0.063--
2008-11-17T12:27:00lindedLKAH998265266--0.125--
2008-11-19T22:22:00KYOJI_KAMEI266267--0.251--
2009-03-31T05:02:00Sturle Sundegoober.ifi267268--0.501--
2009-12-13T18:43:00NowhereRx7C_TRAVIS268269--1.002--
2011-10-30T17:31:00TheJudgerManual testing269271--6.015--
2012-11-13T01:59:00Kyle AskineManual testing271272--8.019--
2012-11-13T01:59:00Kyle AskineManual testing272273--16.04--
2018-02-20T08:45:08Sid & AndyManual testing273274--32.08--


ECM factoring results:
No ECM results for M59636581


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-04-25T23:49:00Arthur Rosenthal3459633j_ml47DB966AFC9809CF7132.5
2021-10-16T08:30:32Dan Nissennuisance7DB966AFC9809CF7132.5


PRP results:
No PRP results for M59636581


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: 2021-10-16T08:30:32+00:00