is 2 11968771 - 1
has 3602960 decimal digits
takes 4.608 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.482664.1791 %40000042845985013.24279.9274 %15.725467.7352 %
Target2684.980064.7059 %80000100000000.34642.9399 %5.326465.7435 %
Difference-1-2.4974-0.5268 %+320000+418459850+12.8964+6.9875%+10.3990+1.9917 %

Known prime factors (2 factors, 144.3 bits, 0.00120601% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
119687713317472348224571548.23713858868
22 × 29 × 37 × 3229
-3732295.498e-60.00010.0002
11968771853531124182858297477456795932996.1073565659014542338129276
22 × 3 × 7 × 43 × 67 × 197 × 1447 × 38327 × 1348583
2021-11-233832713485831.926e+90.06120.0766

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-11-20nordisweet16400000400000
skipped known factor: 331747234822457
--0.2232.140%
2021-11-23nordisweet164000001200000022996.1070.5765.393%
2023-06-12nordisweet16_30.8b14400000428459850
skipped known factor: 331747234822457
skipped known factor: 85353112418285829747745679593
--16.479.124%


Trial Factoring results:
575859606162636465666768
No TF results for M11968771


ECM factoring results:
No ECM results for M11968771


Lucas-Lehmer results:
No L-L results for M11968771


PRP results:
dateuseridcompidcofactorsres64
2021-12-12kutensterra
331747234822457
85353112418285829747745679593
64CEE901A63C49DB


CERT results:
dateuseridcompid
2021-12-12Keith Outwatercygnus


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 400000, B2 = 12000000 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 68
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00