is 2 99768131 - 1
has 30033201 decimal digits
takes 380.505 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-
PRPDAF71E3FF8DCBF__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual277306.793064.9351%10300002781000013.76483.8708%320.557866.2923%1.3573%
PrimeNet2729.585662.5000%400000200000008.11755.1977%17.703064.4491%1.9491%
GPU72276153.395664.4737%6500002200000010.02733.8393%163.422965.8377%1.3640%
Difference+1+153.3974+0.4614%+380000+5810000+3.7375+0.0314%+157.1349+0.4547%+0.4547%

Known prime factors:
No known factors for M99768131

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-08-02T14:31:37storm5510Manual testing103000027810000---13.76--3.871%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-02T19:28:001997rj7compa264265--0.037--
2012-07-23T15:45:00Jimmy BrüggemannManual testing265266--0.075--
2013-08-16T19:27:00america64Manual testing266267--0.150--
2013-10-21T15:46:00Toddlaptop267268--0.300--
2013-10-29T19:36:00Toddlaptop268269--0.599--
2014-04-08T00:35:00SMoffatManual testing269270--1.198--
2014-04-09T00:57:00SMoffatManual testing270271--2.397--
2017-02-17T03:10:44monstManual testing271272--4.794--
2019-03-26T09:47:38Niels_Mache_NextcloudManual testing272273--9.59--
2019-12-20T14:09:55el groccoManual testing273274--19.17--
2020-04-18T10:34:09riccardo ubertiManual testing274275--38.35--
2020-04-29T19:33:12TheJudgerManual testing275276--76.70--
2020-08-01T22:35:03RichD0GPU72_TF276277--153.4--


ECM factoring results:
No ECM results for M99768131


Lucas-Lehmer results:
No L-L results for M99768131


PRP results:
dateuseridcompidcofactorsres64PRP
2020-09-22T19:37:58Ben Deloi-0aae447303ab82ea9DAF71E3FF8DCBF__no


P-1 factor-bounds graph:
B1 = 1030000, B2 = 27810000 (P-1 stage 2)
B1 = 1030000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-09-22T19:37:58+00:00