is 2 91601803 - 1
has 27574891 decimal digits
takes 331.802 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP140BE11713C8B8__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual277334.143764.9351%700000133000007.28213.1472%341.425866.0386%1.1036%
PrimeNet2715.219161.9718%400000180000007.13725.5559%12.356364.0846%2.1128%
GPU7227583.534564.0000%600000220000009.27514.1389%92.809565.4900%1.4900%
Difference+2+250.6092+0.9351%+100000-8700000-1.9929-0.9918%+248.6163+0.5486%+0.5486%

Known prime factors:
No known factors for M91601803

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-06-02T16:38:36Alvin Bunki7-Core7000001330000012---7.282--3.147%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-26T08:50:00Architects Cubedm1_59264265--0.041--
2013-06-18T01:19:00David CampeauManual testing265266--0.082--
2014-02-03T12:33:00CSLatDDtmsm7-32266267--0.163--
2016-04-05T13:02:02Mark RoseManual testing267268--0.326--
2014-02-10T00:26:00CSLatDDtmsm7-32268269--0.653--
2014-02-12T16:52:00CSLatDDtmsm7-32269270--1.305--
2014-03-11T12:41:00hkskypManual testing270271--2.611--
2017-10-30T16:00:19Strolling JellyfishManual testing271272--5.221--
2017-10-30T16:00:19Strolling JellyfishManual testing272273--10.44--
2017-10-30T16:00:19Strolling JellyfishManual testing273274--20.88--
2017-10-30T16:00:19Strolling JellyfishManual testing274275--41.77--
2017-10-30T16:00:19Strolling JellyfishManual testing275276--83.54--
2019-03-24T07:51:27TravisJankManual testing276277--167.1--


ECM factoring results:
No ECM results for M91601803


Lucas-Lehmer results:
No L-L results for M91601803


PRP results:
dateuseridcompidcofactorsres64PRP
2019-08-07T20:34:59dyaomsc140BE11713C8B8__no


P-1 factor-bounds graph:
B1 = 700000, B2 = 13300000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2019-08-07T20:34:59+00:00