is 2 3398063 - 1
has 1022919 decimal digits
takes 0.357 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LAA5739CBD8562A7Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2678.744467.1642%33980637378690.07993.9327%8.824371.0969%7.7635%
PrimeNet2600.045263.3333%140002800000.00432.8469%0.049566.1802%2.8469%
GPU722641.047565.6250%190003200000.00541.8190%1.052867.4440%1.8190%
Difference+3+7.6969+1.5392%+320806+3417869+0.0746+2.1137%+7.7715+3.6529%+3.6529%

Known prime factors (1 factor, 62.4 bits, 0.00183604% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
339806360422279933497129191962.390889069448293
13 × 5521 × 12387241
2012-11-025521123872410.33170.10360.1920

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-11T19:28:00Carsten Kossendeydurandal15000206250---0.004--0.949%
2011-10-25T01:51:00harleeP4_260060000945000---0.016--2.147%
2021-03-14T18:15:42Jocelyn LaroucheManual testing33980637378696---0.080--3.933%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-11-02T08:22:00lycornManual testing??62.390190.1510.7250.307
2009-03-25T05:52:00S485122USB-Z260261--0.045--
2011-08-18T08:32:00Grant McCrackenhome261262--0.090--


ECM factoring results:
Total ECM effort:0.879 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

ECM Summary

B1B2factorcurvesGHz-days
50000500000060.879


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-30T00:00:00Phantomasv4_computersAA5739CBD8562A7A0.357


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-05T14:45:50kkmrkkblmbrbkc4.xlarge
6042227993349712919
94C549A0619C17__no
2017-11-21T04:28:43Oliver KruseGTX-2
6042227993349712919
94C549A0619C17__no


P-1 factor-bounds graph:
B1 = 339806, B2 = 3737869 (stage 2)
B1 = 339806 (stage 1)
B1 = 60000, B2 = 945000 (stage 2)
B1 = 60000 (stage 1)
B1 = 15000, B2 = 206250 (stage 2)
B1 = 15000 (stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
267
262
261
2
250
260
270
280
290
2100
Last modified: 2021-03-14T18:15:42+00:00