is 2 12510937 - 1
has 3766168 decimal digits
takes 4.817 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-
PRPEBAE833243D30AFDverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2684.764264.7059%2500002618670608.09668.0920%12.860967.5619%2.8560%
PrimeNet2640.284562.5000%5500017000000.08074.2505%0.365264.0939%1.5939%
GPU722684.764264.7059%9000022000000.11443.0907%4.878665.7967%1.0908%
Difference---+160000+259667060+7.9822+5.0012%+7.9822+1.7651%+1.7651%

Known prime factors (3 factors, 123.3 bits, 0.00098518% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1251093775065623826.1623
3
-137.150e-136.191e-71.136e-6
1251093765379154137131342.572261288
23 × 32 × 19 × 191
2008-10-01191917.286e-81.584e-52.159e-5
12510937258667177332639191754.5221033764207
3 × 7 × 3691 × 13337
2014-11-273691133370.00030.00240.0042

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
125109374907726936516690881992168.734
1251093719417012816126039031565372580.684
125109371691144125704695685707007212473097.094
125109371269467873788132956730086918695539188138123.256
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-09T19:42:26Lisander ViaeneDesktop250000261867060-
skipped known factor: 75065623
skipped known factor: 6537915413713
skipped known factor: 25866717733263919
--8.097--8.092%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-10-01T00:42:00markrManual testing??42.572132.60308e-810.095.45330e-8
2014-11-27T12:37:00TJAOIManual testing254255*54.522179.32942e-510.090.000
2022-08-10T19:28:53LordJuliusManual testing2126454.522170.00010.090.001
2022-08-10T19:28:53LordJuliusManual testing2126442.572137.28618e-810.091.52642e-7
2022-08-10T19:28:53LordJuliusManual testing2126426.16287.15049e-1310.091.49799e-12
2022-08-10T19:28:53LordJuliusManual testing264265--0.299--
2022-08-10T19:28:53LordJuliusManual testing265266--0.597--
2022-08-10T19:28:53LordJuliusManual testing266267--1.195--
2022-04-07T20:39:08Lisander ViaeneManual testing267268--2.389--
2022-08-10T19:28:53LordJuliusManual testing267268--2.389--


ECM factoring results:
No ECM results for M12510937


Lucas-Lehmer results:
No L-L results for M12510937


PRP results:
dateuseridcompidcofactorsres64PRP
2022-04-13T12:37:09Poaooffice-CN3
75065623
6537915413713
25866717733263919
EBAE833243D30AFDno


P-1 factor-bounds graph:
B1 = 250000, B2 = 261867060 (P-1 stage 2)
B1 = 250000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-08-10T19:28:53+00:00