is 2 11068703 - 1
has 3332012 decimal digits
takes 3.616 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L53DB0E8D0C6B3416double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.684564.1791 %13000023725000.11943.6742 %2.803965.4952 %
Target2685.385064.7059 %8000095000000.28102.8718 %5.666065.7195 %
Difference-1-2.7005-0.5268 %+50000-7127500-0.1615+0.8024%-2.8620-0.2242 %

Known prime factors (1 factor, 88.9 bits, 0.00080273% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
110687035583391981900237646851209192788.85125221527679892746453
3 × 41 × 1171 × 88853 × 1970776097
2017-02-188885319707760975,663,34550.89994.991

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-12-31luenem_mv4_computers650001023750--0.0562.377%
2014-12-20Sid & AndyHamm13000023725006--0.1193.288%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-04-12ANONYMOUSv4_computers212640.177
2013-11-28lycornManual testing2642650.338
2015-02-20NumberwangManual testing2652660.675
2015-12-18VictordeHollanderManual testing2662671.350


ECM factoring results:
Total ECM effort:1.011 GHz-days
Estimated T-Level:0.385
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.514
50000500000010.497


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-11-15curtiscv4_computers53DB0E8D0C6B34163.616
2004-01-27luenem_mv4_computers53DB0E8D0C6B34163.616


PRP results:
dateuseridcompidcofactorsres64
2021-05-07kutensterra
558339198190023764685120919
3C3657AADE76B84C


CERT results:
dateuseridcompid
2021-05-07curtiscwcm220--02l


P-1 factor-bounds graph:
B1 = 130000, B2 = 2372500 (P-1 stage 2)
B1 = 130000 (P-1 stage 1)
B1 = 65000, B2 = 1023750 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.38 ~= -15-bit
250
260
270
280
290
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Last modified: 2024-02-09T03:30:02+00:00