is 2 91819087 - 1
has 27640300 decimal digits
takes 332.589 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
Actual277333.353064.9351%695000123362506.98153.0954%340.334566.0205%1.0854%
PrimeNet2715.206761.9718%400000180000007.13725.5574%12.344064.0852%2.1134%
GPU7227583.336864.0000%600000220000009.27514.1401%92.611965.4904%1.4904%
Difference+2+250.0162+0.9351%+95000-9663750-2.2936-1.0447%+247.7226+0.5300%+0.5300%

Known prime factors (1 factor, 102.9 bits, 0.00011203% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
91819087923004933043700956877599201924131102.86450262149363546871081260
22 × 5 × 787 × 1499 × 4759 × 336563 × 1330003
2019-07-0433656313300031.655e+92.05203.5976

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-07-04T05:02:56Jwb52zClay6950001233625031102.8646.982665.213.963.095%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-01-08T09:40:00Architects Cubedm1_84264265--0.041--
2013-06-25T07:40:00David CampeauManual testing265266--0.081--
2013-08-29T12:19:00Norman LeyManual testing266267--0.163--
2014-04-03T02:12:00SMoffatManual testing267268--0.326--
2014-10-03T05:58:00acido_baseGLaDOS268269--0.651--
2014-10-10T15:53:00shaugeManual testing269270--1.302--
2014-10-10T15:53:00shaugeManual testing270271--2.604--
2018-03-17T00:17:50Yizhe HuangManual testing271272--5.209--
2018-08-18T13:20:221997rj7Manual testing272273--10.42--
2018-08-23T09:00:07Tim SorberaManual testing273274--20.83--
2019-01-13T21:46:49TheJudgerManual testing274275--41.67--
2019-01-13T21:46:49TheJudgerManual testing275276--83.34--
2019-04-07T21:38:25TheJudgerManual testing276277--166.7--


ECM factoring results:
No ECM results for M91819087


Lucas-Lehmer results:
No L-L results for M91819087


PRP results:
No PRP results for M91819087


P-1 factor-bounds graph:
B1 = 695000, B2 = 12336250 (P-1 stage 2)
B1 = 695000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2019-07-04T05:02:56+00:00