is 2 5897279 - 1
has 1775258 decimal digits
takes 1.045 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L2F10D02359E86A5Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.038665.6716%6500011050000.03132.4804%5.069866.5231%0.8515%
PrimeNet2620.104262.9032%260006000000.01473.3203%0.118964.1350%1.2317%
GPU722662.504365.1515%400008000000.02092.3411%2.525265.9673%0.8158%
Difference+1+2.5343+0.5201%+25000+305000+0.0103+0.1394%+2.5446+0.5558%+0.5558%

Known prime factors (1 factor, 69.2 bits, 0.00117276% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
58972796600608794205966319192169.16155963172118921
3 × 17 × 1097317100371
2011-07-0417109731710037127.97215,36328,694

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-02-11T00:00:00ANONYMOUSv4_computers2500025000---0.006--0.454%
2001-04-21T00:00:00ANONYMOUSv4_computers2500025000---0.006--0.454%
2011-03-07T19:07:00harleeP4_2600650001105000---0.031--2.480%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-08T00:00:00Mark Dv4_computers21261--0.052--
1998-06-01T00:00:00ANONYMOUSv4_computers21262--0.104--
2009-02-13T05:23:00GrunwalderGIMPManual testing262263--0.166--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-04T00:00:00vidmarv4_computers2F10D02359E86A5E1.045
2001-05-20T00:00:00ANONYMOUSv4_computers2F10D02359E86A5E1.045


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T17:59:31kkmrkkblmbrbkManual testing
660060879420596631919
A9D94A54206C26__no
2018-09-08T21:18:47ATHwork200560
660060879420596631919
A9D94A54206C26__no


P-1 factor-bounds graph:
B1 = 65000, B2 = 1105000 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
B1 = 25000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
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109
1010
1011
1012
1013
TF factor-bounds graph:
267
263
262
261
250
260
270
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2100
Last modified: 2018-09-08T21:18:47+00:00