is 2 13245709 - 1
has 3987356 decimal digits
takes 5.411 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
Actual2672.243364.1791 %3000002101291506.94878.8859 %9.192067.3621 %
Target2684.499964.7059 %90000120000000.43763.1776 %4.937665.8274 %
Difference-1-2.2567-0.5268 %+210000+198129150+6.5111+5.7084%+4.2544+1.5347 %

Known prime factors (2 factors, 123.8 bits, 0.00093448% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1324570910228118147532844011959.82738609175800
23 × 52 × 13 × 14849683
2000-08-1025148496830.00850.47920.8950
13245709178268789022184706812063.951672930339260
22 × 5 × 33646516963
2017-06-155336465169630.20781,085.72,027.9

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-06-13nordisweet16_30.8b14300000300000--0.1781.920%
2022-06-20nordisweet16_30.8b14300000210129150
skipped known factor: 1022811814753284401
--8.5328.131%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-08-10akohlerv4_computers??
59.827
19
2017-06-15TJAOIManual testing263264*
63.951
20
0.141


ECM factoring results:
No ECM results for M13245709


Lucas-Lehmer results:
No L-L results for M13245709


PRP results:
dateuseridcompidcofactorsres64
2022-08-21Perigbruinneall
1022811814753284401
17826878902218470681
E2DC0B0AD164F032


CERT results:
dateuseridcompid
2022-08-21Ben Deloi-0a64a7c2ed5dff7d9


P-1 factor-bounds graph:
B1 = 300000, B2 = 210129150 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
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1010
1011
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