is 2 91311949 - 1
has 27487636 decimal digits
takes 330.752 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
Actual277335.204464.9351%6950006950003.65031.2896%338.854765.3873%0.4522%
PrimeNet2715.235761.9718%400000180000007.13725.5538%12.372964.0838%2.1120%
GPU7227583.799664.0000%600000220000009.27514.1373%93.074765.4894%1.4894%
Difference+2+251.4047+0.9351%+95000-21305000-5.6248-2.8478%+245.7800-0.1022%-0.1022%

Known prime factors (1 factor, 80.5 bits, 0.00008813% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9131194916792301849918978329141272580.4749195018852307587
3 × 13 × 41 × 179 × 379 × 1097 × 77269
2019-05-021097772694,821.70.02760.0413

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-05-02T05:19:12Jwb52zClay6950006950002580.4743.650661.57.3011.290%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-29T16:20:00Architects Cubedm1_32264265--0.041--
2013-06-12T15:28:00David CampeauManual testing265266--0.082--
2014-02-01T16:47:00timc995dl580_g5b266267--0.164--
2014-04-02T16:42:00hkskypManual testing267268--0.327--
2014-04-02T16:52:00hkskypManual testing268269--0.655--
2014-04-02T17:08:00hkskypManual testing269270--1.309--
2014-09-14T18:39:00Meral HarbesManual testing270271--2.619--
2017-03-06T17:15:41monstManual testing271272--5.238--
2018-04-14T05:51:25fre_gamesManual testing272273--10.48--
2018-04-23T14:24:43RichD0Manual testing273274--20.95--
2018-12-16T22:35:42TheJudgerManual testing274275--41.90--
2018-12-16T22:35:42TheJudgerManual testing275276--83.80--
2019-03-10T17:48:21TheJudgerManual testing276277--167.6--


ECM factoring results:
No ECM results for M91311949


Lucas-Lehmer results:
No L-L results for M91311949


PRP results:
No PRP results for M91311949


P-1 factor-bounds graph:
B1 = 695000 (P-1 stage 1)
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106
TF factor-bounds graph:
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2100
Last modified: 2019-05-02T05:19:12+00:00