is 2 66374743 - 1
has 19980789 decimal digits
takes 167.781 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
Actual27457.640464.8649%5900005900002.16251.6219%59.802965.4347%0.5699%
PrimeNet2703.600062.8571%280000130000003.56645.3127%7.166464.8304%1.9733%
GPU7227457.640464.8649%450000150000004.55493.9238%62.195366.2435%1.3786%
Difference---+140000-14410000-2.3924-2.3018%-2.3924-0.8088%-0.8088%

Known prime factors (1 factor, 87.8 bits, 0.00013222% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
663747432623201729276744115602868172787.7611976054151559384656
24 × 33 × 89 × 109 × 191 × 31391 × 78643
2013-09-163139178643770,2570.12450.2342

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-09-16T18:56:00Jwb52zClay5900005900002787.7612.163335.64.3251.622%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-03-09T00:14:001997rj7Manual testing21264--0.054--
2009-03-28T12:53:00SAHS Science DeptLab08264265--0.056--
2010-07-11T06:47:00UncountedGnomeSir_Wellington265266--0.113--
2010-07-11T12:48:00UncountedGnomeSir_Wellington266267--0.225--
2010-07-11T22:22:00UncountedGnomeSir_Wellington267268--0.450--
2010-07-16T21:39:00Sagredo268269--0.901--
2012-02-07T22:18:00P3K269270--1.801--
2013-06-12T18:37:00TheJudgerManual testing270271--3.603--
2013-06-12T18:37:00TheJudgerManual testing271272--7.205--
2013-06-12T18:37:00TheJudgerManual testing272273--14.41--
2013-09-10T22:42:00Jerry HallettManual testing273274--28.82--


ECM factoring results:
No ECM results for M66374743


Lucas-Lehmer results:
No L-L results for M66374743


PRP results:
No PRP results for M66374743


P-1 factor-bounds graph:
B1 = 590000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
Last modified: 2013-09-16T18:56:19+00:00