is 2 12966643 - 1
has 3903349 decimal digits
takes 5.297 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
Actual2672.291664.1791 %40000032134830010.59379.6795 %12.885367.6464 %
Target2684.596864.7059 %90000120000000.43763.1676 %5.034465.8239 %
Difference-1-2.3052-0.5268 %+310000+309348300+10.1561+6.5119%+7.8508+1.8225 %

Known prime factors (2 factors, 157.4 bits, 0.00121403% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
129666432422822917974978231857.7499342521877
3 × 13 × 15349 × 15607
2000-04-2715349156070.00280.00910.0185
1296664310081145530605916314414711859673199.67038873382766094186114381
6047 × 59887 × 373379 × 287494751
2022-05-243733792874947511.316e+109.486417.327

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-05-22nordisweet16_30.8b14400000400000
skipped known factor: 242282291797497823
--0.2372.165%
2022-05-24nordisweet16_30.8b1440000032134830023199.67012.428.889%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-04-27ANONYMOUSv4_computers??
57.749
18


ECM factoring results:
No ECM results for M12966643


Lucas-Lehmer results:
No L-L results for M12966643


PRP results:
dateuseridcompidcofactorsres64
2022-05-30XZTM900Tiny4
242282291797497823
1008114553060591631441471185967
4835A8F645488EB0


CERT results:
dateuseridcompid
2022-05-30iwessrvwes41


P-1 factor-bounds graph:
B1 = 400000, B2 = 321348300 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
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