is 2 80126261 - 1
has 24120409 decimal digits
takes 250.033 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L434602660DB60D__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27595.498164.0000%670000130650006.08713.7310%101.585365.3432%1.3432%
PrimeNet2715.966661.9718%340000160000005.39895.2478%11.365463.9675%1.9956%
GPU7227595.498164.0000%500000170000006.32993.7835%101.828065.3621%1.3621%
Difference---+170000-3935000-0.2428-0.0525%-0.2428-0.0189%-0.0189%

Known prime factors:
No known factors for M80126261

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-12-02T10:33:38ATHec2-8x670000130650006---6.087--3.731%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-03T12:50:00Architects Cubeda3_bu2264265--0.047--
2010-12-16T16:51:00ANONYMOUSthe_machine265266--0.093--
2013-01-26T12:42:00phoenicisManual testing266267--0.187--
2013-01-30T00:51:00rjbelansManual testing267268--0.373--
2013-01-31T20:48:00SMoffatManual testing268269--0.746--
2013-02-02T00:34:00Florimond C.ichthys1269270--1.492--
2013-05-31T18:12:00PascalBieriManual testing270271--2.984--
2014-11-09T10:34:00Stef42Manual testing271272--5.969--
2016-09-11T13:35:13proxy2222Manual testing272273--11.94--
2016-09-16T12:37:06Brian BeuningManual testing273274--23.88--
2016-09-19T04:02:02Mark RoseManual testing274275--47.75--


ECM factoring results:
No ECM results for M80126261


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2017-04-18T18:16:46ANONYMOUSToshiba_no4434602660DB60D__250.0


PRP results:
No PRP results for M80126261


P-1 factor-bounds graph:
B1 = 670000, B2 = 13065000 (P-1 stage 2)
B1 = 670000 (P-1 stage 1)
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TF factor-bounds graph:
275
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2100
Last modified: 2017-04-18T18:16:46+00:00