is 2 12845309 - 1
has 3866824 decimal digits
takes 5.247 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
Actual2672.313264.1791 %40000042845985014.05019.9993 %16.363367.7610 %
Target2684.640264.7059 %90000120000000.43763.1633 %5.077865.8223 %
Difference-1-2.3270-0.5268 %+310000+416459850+13.6125+6.8361%+11.2855+1.9386 %

Known prime factors (2 factors, 98.1 bits, 0.00076350% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
12845309179834327927.4227
7
-171.394e-127.859e-71.205e-6
1284530918548901930449600554732270.65272201073288504
23 × 227 × 96493 × 412033
2022-05-149649341203322.9700.06730.1163

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-04-24nordisweet16_30.8b14400000400000
skipped known factor: 179834327
--0.2372.162%
2022-05-14nordisweet16_30.8b1440000042845985022270.65216.479.192%


Trial Factoring results:
575859606162636465666768
No TF results for M12845309


ECM factoring results:
No ECM results for M12845309


Lucas-Lehmer results:
No L-L results for M12845309


PRP results:
dateuseridcompidcofactorsres64
2022-05-22XZT800G2Mini6
179834327
1854890193044960055473
44A021C0DBBF092B


CERT results:
dateuseridcompid
2022-05-22curtiscwcm229--27l


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (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