is 2 102679207 - 1
has 30909522 decimal digits
takes 408.827 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276149.046764.4737%8550001795500010.31493.8336%159.361668.3073%5.8073%
PrimeNet2729.313862.5000%450000220000009.37655.3817%18.690367.8817%5.3817%
GPU72276149.046764.4737%6500002200000010.46823.8528%159.514968.3265%3.8528%
Difference---+205000-4045000-0.1533-0.0192%-0.1533-0.0192%-0.0192%

Known prime factors (1 factor, 93.8 bits, 0.00009138% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
102679207175659088202070492999694044972993.82785537809131146919064
23 × 32 × 7 × 89 × 1409 × 63313 × 21376357
63313213763572021-02-1634,099,3247.069512.558

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-02-16T07:15:07Ben Deloi-03182041903947c5a85500017955000122993.82710.31817.720.633.834%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-09T13:30:001997rj7compw263264--0.019--
2010-08-19T11:33:00Donna NoblePH9500264265--0.036--
2012-04-24T11:51:00OS1L7265266--0.073--
2013-08-28T22:06:00RobishManual testing266267--0.146--
2013-08-30T09:14:00RobishManual testing267268--0.291--
2013-09-01T22:59:00RobishManual testing268269--0.582--
2013-09-02T18:13:00RobishManual testing269270--1.164--
2013-09-04T12:49:00RobishManual testing270271--2.329--
2014-12-12T18:53:00shaugeManual testing271272--4.658--
2020-02-26T12:03:46el groccoManual testing272273--9.316--
2020-03-31T05:40:42SRBaseManual testing273274--18.63--
2020-11-14T21:09:02ixfd64Manual testing274275--37.26--
2020-11-18T06:20:101997rj7Manual testing275276--74.52--


ECM factoring results:
Exponent "102679207" not found


Lucas-Lehmer results:
Exponent "102679207" not found


PRP results:
Exponent "102679207" not found


P-1 factor-bounds graph:
B1 = 855000, B2 = 17955000 (stage 2)
B1 = 855000 (stage 1)
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108
TF factor-bounds graph:
276
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2100
Last modified: 2021-02-16T07:15:07+00:00