is 2 2408587 - 1
has 725057 decimal digits
takes 0.163 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26712.336767.1642%2000000600000000.50557.6181%12.842174.7822%12.0704%
PrimeNet2590.031962.7119%100001800000.00192.5202%0.033865.2320%2.5202%
GPU722630.662665.0794%100001400000.00171.2758%0.664366.3551%1.2758%
Difference+4+11.6740+2.0848%+1990000+59860000+0.5038+6.3423%+12.1778+8.4271%+8.4271%

Known prime factors (4 factors, 188.0 bits, 0.00780705% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
240858743354567825.3709
32
-991.860e-128.816e-71.794e-6
240858780434136632391342.8711669737
3 × 556579
2008-09-3035565793.442e-70.00300.0055
24085871412535626429878811856.97129322910620
22 × 32 × 5 × 127 × 1282717
2015-07-2112712827170.00540.00690.0128
240858781858122728616184011962.8281699297611600
24 × 3 × 52 × 192 × 83 × 167 × 283
2016-10-213613610.59913.536e-57.197e-5

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
24085873487187165716106625132168.241
240858761239870455941151670025272582.341
24085873548923466332013166945873672788.198
240858711361608357437947146504922065593199.842
24085876584187428024463468810953966083932105.699
2408587115627514666839761981708018388959828137119.799
24085874925776107603034279056064595224000495338125.212
2408587285454594988844279097616914056500170171340131.068
24085875012980831666987139100013057681390927669932744145.169
2408587930039931317626810560712934300042946092632729215949162.670
240858740321478514985449839450736477877810009250433865183
5940153
57188.040
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-09-28T16:26:27alpertronManual testing20000006000000012---0.505--7.618%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-30T14:36:00markrManual testing??42.871131.00935e-70.3622.24567e-7
2015-05-14T11:17:00TJAOIManual testing25625756.971180.0010.3540.003
2016-10-21T15:19:35TJAOIManual testing26226362.828190.3440.3300.698


ECM factoring results:
Total ECM effort:0.267 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

ECM Summary

B1B2factorcurvesGHz-days
50000500000030.267


Lucas-Lehmer results:
Exponent "2408587" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-13T01:33:24Oliver KruseGTX-1159DB8740E1154__no
2017-11-26T10:46:07ATHec2-1xf
43354567
8043413663239
141253562642987881
8185812272861618401
159DB8740E1154__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (stage 2)
B1 = 2000000 (stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
263
257
2
220
230
240
250
260
270
280
290
2100
Last modified: 2018-09-28T16:26:27+00:00