is 2 12200029 - 1
has 3672575 decimal digits
takes 4.697 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LAB6DDB66FC9D98EEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2699.785865.2174 %1500000300000001.70426.6174 %11.490067.5191 %
Target2684.885664.7059 %90000110000000.38213.0792 %5.267765.7927 %
Difference+1+4.9001+0.5115 %+1410000+19000000+1.3221+3.5381%+6.2223+1.7264 %

Known prime factors (1 factor, 72.8 bits, 0.00059675% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1220002982440943316875172701932272.804337871915373624
23 × 3 × 61 × 163 × 311 × 4552637
2018-11-13311455263783.8860.13860.2586

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-02-11tkomv4_computers1400001925000--0.1323.212%
2018-11-13riccardo ubertiNomad2C43000085000001222272.8040.4855.103%
2022-02-05riccardo ubertiColab_noGPU11150000030000000
skipped known factor: 8244094331687517270193
--1.7047.216%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-03-08ANONYMOUSv4_computers212640.161
2013-08-14lycornManual testing2642650.306
2013-09-27NesowaManual testing2652660.613
2015-03-02ThaManual testing2662671.225
2015-07-14ThaManual testing2672682.450
2017-10-20ramgeisManual testing2682694.900


ECM factoring results:
Total ECM effort:12.502 GHz-days
Estimated T-Level:2.885
DigitsB1CompleteFacMiss
20110000.57756.162%
25500000.05594.608%
302500000.00499.643%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.171
50000144000001011.33


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-04-15tkomv4_computersAB6DDB66FC9D98EE4.697
2003-06-23tkomv4_computersAB6DDB66FC9D98EE4.697
2004-06-12PaJaSoftv4_computersAB6DDB66FC9D98EE4.697


PRP results:
dateuseridcompidcofactorsres64
2018-11-15riccardo ubertiNomad2C
8244094331687517270193
8B8F63808B9F466E
2021-01-12JaytholomewJaytholomew
8244094331687517270193
8B8F63808B9F466E


CERT results:
dateuseridcompid
2021-01-12Alex S.m5zn


P-1 factor-bounds graph:
B1 = 1500000, B2 = 30000000 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 430000, B2 = 8500000 (P-1 stage 2)
B1 = 430000 (P-1 stage 1)
B1 = 140000, B2 = 1925000 (P-1 stage 2)
B1 = 140000 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
TF factor-bounds graph:
269
268
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=2.88 ~= -7-bit
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260
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280
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Last modified: 2024-03-13T02:15:48+00:00