is 2 27179993 - 1
has 8181994 decimal digits
takes 25.160 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.589364.7887%400000505354504.20335.7045%21.792666.7973%2.0086%
PrimeNet2660.543462.1212%12000045000000.48145.2134%1.024764.0960%1.9748%
GPU722708.791464.2857%20000060000000.69263.9046%9.484065.6802%1.3945%
Difference+1+8.7979+0.5030%+200000+44535450+3.5107+1.7999%+12.3086+1.1171%+0.6141%

Known prime factors (3 factors, 134.5 bits, 0.00049496% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2717999391324776491033.088168
23 × 3 × 7
-884.363e-111.074e-52.185e-5
27179993166885157031133.958307
307
2008-09-0813074.490e-112.372e-54.149e-5
271799932062247216729471750172167.4833793686070356
22 × 32 × 7 × 13 × 283 × 4091957
2022-03-0528340919571.17320.29960.5589

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
271799931524074966526330222472167.046
27179993188334266134943596380044369503331100.571
27179993344158450598578336056069379195131101.441
271799933143019357805987325207664416292556360319941134.529
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-24T19:37:00masserManual testing40000050535450-
skipped known factor: 9132477649
skipped known factor: 16688515703
skipped known factor: 206224721672947175017
--4.203--5.704%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T23:27:00Will EdgingtonManual testing??33.958112.79770e-1251.835.76286e-12
2022-03-05T14:22:33masserManual testing26726867.483210.08051.280.163
2022-03-05T14:22:34masserManual testing267268
skipped known factors(?)
--1.100--
2022-03-05T14:22:34masserManual testing268269--2.199--
2022-03-16T22:39:07masserManual testing269270--4.399--
2022-03-16T22:39:07masserManual testing270271--8.798--


ECM factoring results:
No ECM results for M27179993


Lucas-Lehmer results:
No L-L results for M27179993


PRP results:
No PRP results for M27179993


P-1 factor-bounds graph:
B1 = 400000, B2 = 50535450 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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TF factor-bounds graph:
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2100
Last modified: 2022-04-24T19:37:00+00:00