is 2 91131641 - 1
has 27433358 decimal digits
takes 330.099 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
Actual277335.867664.9351%700000133000007.28213.1451%343.149766.0379%1.1028%
PrimeNet2715.246061.9718%400000180000007.13725.5525%12.383264.0833%2.1115%
GPU7227583.965464.0000%600000220000009.27514.1364%93.240565.4891%1.4891%
Difference+2+251.9022+0.9351%+100000-8700000-1.9929-0.9912%+249.9092+0.5488%+0.5488%

Known prime factors:
No known factors for M91131641

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-04-02T03:47:29CuboxOnyx7000001330000012---7.282--3.145%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-26T19:20:00Architects Cubedm1_83264265--0.041--
2011-11-01T11:19:00Shadowjd007Manual testing265266--0.082--
2014-02-03T04:57:00CSLatDDtmsm7-32266267--0.164--
2014-02-05T07:35:00CSLatDDtmsm7-32267268--0.328--
2014-02-07T08:31:00CSLatDDtmsm7-32268269--0.656--
2014-02-10T08:35:00g0bManual testing269270--1.312--
2014-09-05T17:55:00shaugeManual testing270271--2.624--
2017-02-24T07:00:28monstManual testing271272--5.248--
2018-01-09T18:20:071997rj7Manual testing272273--10.50--
2018-01-09T18:20:071997rj7Manual testing273274--20.99--
2018-12-09T18:19:43TheJudgerManual testing274275--41.98--
2018-12-09T18:19:43TheJudgerManual testing275276--83.97--
2019-03-03T17:40:28TheJudgerManual testing276277--167.9--


ECM factoring results:
No ECM results for M91131641


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2019-07-04T11:37:35spicaA461E9F735A457__330.1


PRP results:
No PRP results for M91131641


P-1 factor-bounds graph:
B1 = 700000, B2 = 13300000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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108
TF factor-bounds graph:
277
276
275
274
273
272
271
270
269
268
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266
265
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2100
Last modified: 2019-07-04T11:37:35+00:00