is 2 91819051 - 1
has 27640289 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
Actual277333.353164.9351%705000133950007.33413.1558%340.687266.0416%1.1066%
PrimeNet2715.206761.9718%400000180000007.13725.5574%12.344064.0852%2.1134%
GPU7227583.336864.0000%600000220000009.27514.1401%92.611965.4904%1.4904%
Difference+2+250.0163+0.9351%+105000-8605000-1.9409-0.9843%+248.0753+0.5512%+0.5512%

Known prime factors:
No known factors for M91819051

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-07-05T19:33:04Alvin Bunki7-Core7050001339500012---7.334--3.156%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-01-08T11:20:00Architects Cubedm1_06264265--0.041--
2013-06-25T07:40:00David CampeauManual testing265266--0.081--
2013-08-29T11:11:00Norman LeyManual testing266267--0.163--
2013-11-26T03:44:00Per Jessenbeaufort2267268--0.326--
2014-06-04T14:34:00CSLatDDikenny-24268269--0.651--
2014-06-09T09:37:00Ivan Dimitrijevichome269270--1.302--
2014-09-12T18:25:00ANONYMOUSManual 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--
2019-01-13T21:46:48TheJudgerManual testing274275--41.67--
2019-01-13T21:46:48TheJudgerManual testing275276--83.34--
2019-04-07T21:38:24TheJudgerManual testing276277--166.7--


ECM factoring results:
No ECM results for M91819051


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2020-05-22T15:37:25-Anonymous-5A28B3A12DB46F__332.6


PRP results:
No PRP results for M91819051


P-1 factor-bounds graph:
B1 = 705000, B2 = 13395000 (P-1 stage 2)
B1 = 705000 (P-1 stage 1)
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108
TF factor-bounds graph:
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274
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2100
Last modified: 2020-05-22T15:37:25+00:00