is 2 12707413 - 1
has 3825313 decimal digits
takes 5.191 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-
PRPE1ECEDA5B13E9C85verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2684.690664.7059%40000042845985014.05019.1811%18.740767.9463%3.2404%
PrimeNet2640.280162.5000%5500017000000.08574.2602%0.365864.0976%1.5976%
GPU722684.690664.7059%9000022000000.12143.0979%4.812065.7992%1.0934%
Difference---+310000+426259850+13.9287+6.0833%+13.9287+2.1470%+2.1470%

Known prime factors (2 factors, 80.2 bits, 0.00063145% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1270741376244479826.1843
3
-137.040e-136.568e-71.205e-6
12707413187360035914927291754.057737207628
22 × 3 × 139 × 441971
2014-10-301394419710.00030.01430.0266

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1270741314285168323754919548931912580.241
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-05-02T00:19:28nordisweet16_30.8b14400000400000-
skipped known factor: 76244479
--0.237--2.159%
2022-05-02T06:22:55nordisweet16_30.8b14400000428459850-
skipped known factor: 76244479
skipped known factor: 18736003591492729
--14.05--9.181%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-10-30T12:07:00TJAOIManual testing254255*54.057170.00010.840.000
2022-06-25T04:02:11LordJuliusManual testing2126454.057170.00010.840.001
2022-06-25T04:02:11LordJuliusManual testing2126426.18487.03993e-1310.841.47085e-12
2022-06-25T04:02:11LordJuliusManual testing264265--0.294--
2022-06-25T04:02:11LordJuliusManual testing265266--0.588--
2022-06-25T04:02:11LordJuliusManual testing266267--1.176--
2022-04-11T21:21:53Lisander ViaeneManual testing267268--2.352--


ECM factoring results:
No ECM results for M12707413


Lucas-Lehmer results:
No L-L results for M12707413


PRP results:
dateuseridcompidcofactorsres64PRP
2022-05-03T01:00:37XZT600G2Mini6
76244479
18736003591492729
E1ECEDA5B13E9C85no


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:
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Last modified: 2022-06-25T04:02:11+00:00