is 2 91749509 - 1
has 27619355 decimal digits
takes 332.337 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
Actual277333.605864.9351%700000131250007.23203.1390%340.837866.0358%1.1007%
PrimeNet2715.210761.9718%400000180000007.13725.5569%12.347964.0850%2.1132%
GPU7227583.400064.0000%600000220000009.27514.1397%92.675165.4903%1.4903%
Difference+2+250.2058+0.9351%+100000-8875000-2.0430-1.0007%+248.1627+0.5455%+0.5455%

Known prime factors:
No known factors for M91749509

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-07-11T01:56:35Maciej KmieciakAsrock_Windows700000131250006---7.232--3.139%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-27T12:20:00Architects Cubedm1_77264265--0.041--
2013-06-20T15:28:00David CampeauManual testing265266--0.081--
2013-08-29T11:10:00Norman LeyManual testing266267--0.163--
2014-05-18T05:39:00GrunwalderGIMPcompute-0-1267268--0.326--
2014-07-18T08:08:00TSRPrimeTSRKatie268269--0.652--
2014-07-20T00:02:00TSRPrimeTSRKatie269270--1.303--
2014-09-12T15:28:00shaugeManual testing270271--2.606--
2018-03-13T03:11:28gcardonaManual testing271272--5.213--
2018-07-05T13:20:081997rj7Manual testing272273--10.43--
2018-07-28T09:00:07Tim SorberaManual testing273274--20.85--
2019-01-13T21:46:55TheJudgerManual testing274275--41.70--
2019-01-13T21:46:55TheJudgerManual testing275276--83.40--
2019-04-08T23:09:18TravisJankManual testing276277--166.8--


ECM factoring results:
No ECM results for M91749509


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2020-01-28T05:49:23Lasers and plasmas in Bordeauxst2B319788B301177__332.3


PRP results:
No PRP results for M91749509


P-1 factor-bounds graph:
B1 = 700000, B2 = 13125000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-01-28T05:49:23+00:00