is 2 67097507 - 1
has 20198363 decimal digits
takes 169.608 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L84269F35DBA0CF__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276228.085965.7895%605000124025004.57343.2298%232.659366.8944%1.1049%
PrimeNet2703.561262.8571%280000130000003.56645.3198%7.127664.8331%1.9759%
GPU7227457.019564.8649%450000150000004.55493.9291%61.574466.2454%1.3805%
Difference+2+171.0664+0.9246%+155000-2597500+0.0185-0.6993%+171.0848+0.6490%+0.6490%

Known prime factors:
No known factors for M67097507

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-09-13T10:52:00NesowaIceblock60500012402500---4.573--3.230%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-12-11T07:41:00Wojciech FlorekManual testing263264--0.029--
2009-03-30T23:18:00ANONYMOUS264265--0.056--
2010-10-20T22:22:00Aldo_GridAcer13265266--0.111--
2011-04-20T06:17:00Carsten KossendeyManual testing266267--0.223--
2011-04-20T06:17:00Carsten KossendeyManual testing267268--0.445--
2011-04-20T06:17:00Carsten KossendeyManual testing268269--0.891--
2012-02-17T09:16:00YoannYoannAsus269270--1.782--
2012-07-11T21:01:00aaron_bertramManual testing270271--3.564--
2013-09-09T01:00:00NesowaManual testing271272--7.128--
2013-09-09T01:00:00NesowaManual testing272273--14.26--
2013-09-09T01:00:00NesowaManual testing273274--28.51--
2015-06-01T06:11:00BigBrotherManual testing274275--57.02--
2022-03-21T06:07:51La GüiraManual testing275276--114.0--


ECM factoring results:
No ECM results for M67097507


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-07-03T01:21:00David.C-BSigns84269F35DBA0CF__169.6


PRP results:
No PRP results for M67097507


P-1 factor-bounds graph:
B1 = 605000, B2 = 12402500 (P-1 stage 2)
B1 = 605000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-21T06:07:51+00:00