is 2 10919791 - 1
has 3287185 decimal digits
takes 3.567 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LCAA01EB2BFACB30Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.721164.1791 %----2.721164.1791 %
Target2685.458464.7059 %7000090000000.26362.7573 %5.722065.6790 %
Difference-1-2.7373-0.5268 %-70000-9000000-0.2636-2.7573 %-3.0009-1.4999 %

Known prime factors (1 factor, 68.6 bits, 0.00062810% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
109197914435010357087593759692168.58720307212643024
24 × 32 × 419 × 336568759
2017-01-134193365687595.45848.685916.223

P-1 results:
No P-1 results for M10919791


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-11-17t2v4_computers212640.180
2008-03-22t2v4_computers212640.180
2013-12-06lycornManual testing2642650.342
2015-05-20ThaManual testing2652660.684
2015-11-10VictordeHollanderManual testing2662671.369


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)
2001-01-28ANONYMOUSv4_computersCAA01EB2BFACB30B3.567


PRP results:
dateuseridcompidcofactorsres64
2021-03-27Joe S.11600k
443501035708759375969
DD017E924774F43B


CERT results:
dateuseridcompid
2021-03-27Tom Xue970


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
108
109
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
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Last modified: 2024-02-09T03:30:02+00:00