is 2 5608033 - 1
has 1688187 decimal digits
takes 0.886 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L353970B3DADB4470double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.298565.6716%6500010237500.02682.4141%5.325366.5004%0.8287%
PrimeNet2620.109662.9032%240005500000.01213.1715%0.121664.0798%1.1765%
GPU722662.633465.1515%360007000000.01652.1904%2.650065.9149%0.7633%
Difference+1+2.6650+0.5201%+29000+323750+0.0103+0.2237%+2.6753+0.5855%+0.5855%

Known prime factors (1 factor, 74.3 bits, 0.00132511% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5608033234601365007198067455272374.3132091654640826811
35 × 2039 × 4221496943
2015-08-1320394221496943725.1852.66598.363

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-06-06T06:59:00Carsten Kossendeyleela30000397500---0.011--1.570%
2011-01-10T20:42:00harleeP4_2600650001023750---0.027--2.414%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-02-09T04:43:00GrunwalderGIMPManual testing262263--0.175--
2014-11-10T12:42:00NesowaManual testing263264--0.350--
2014-11-11T11:59:00monstManual testing264265--0.666--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.441 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:1.441 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.19482.403%
25500000.01798.266%
302500000.00199.892%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.720
50000500000030.720


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-11-24T00:00:00ANONYMOUSv4_computers353970B3DADB44700.886
2000-09-29T00:00:00ANONYMOUSv4_computers353970B3DADB44700.886


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-08T22:20:12Oliver KruseThreadripper
23460136500719806745527
C218513C3637AF__no
2018-04-05T10:47:16kkmrkkblmbrbkc5.xlarge
23460136500719806745527
C218513C3637AF__no


P-1 factor-bounds graph:
B1 = 65000, B2 = 1023750 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
B1 = 30000, B2 = 397500 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
102
103
104
105
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
265
264
263
250
260
270
280
290
2100
Last modified: 2018-04-05T10:47:16+00:00