is 2 102477191 - 1
has 30848709 decimal digits
takes 408.023 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
Actual276149.340564.4737%4000000400000023.09332.8752%172.433867.3489%4.8489%
PrimeNet2729.332262.5000%450000220000009.37655.3804%18.708667.8804%5.3804%
GPU72276149.340564.4737%6500002200000010.46823.8519%159.808768.3256%3.8519%
Difference---+3350000-18000000+12.6250-0.9767%+12.6250-0.9767%-0.9767%

Known prime factors (1 factor, 88.3 bits, 0.00008620% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1024771913905636646311057746045474312788.3361905612657899189365
5 × 7 × 14411 × 282767 × 13361147
282767133611472021-02-031,107,5585.74637.8495

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-02-03T19:13:14Mihai PredaManual testing400000040000002788.33623.09816.046.192.875%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-18T23:39:001997rj7Manual testing263264--0.019--
2010-08-19T01:50:00DerekBasement264265--0.036--
2012-04-26T05:58:00RichardUNKNOWN265266--0.073--
2014-05-05T07:31:00g0bManual testing266267--0.146--
2014-07-11T01:46:00SMoffatManual testing267268--0.292--
2014-07-13T07:35:00Preben SManual testing268269--0.583--
2015-02-01T14:26:00JustinManual testing269270--1.167--
2015-02-07T01:29:00JustinManual testing269270--1.167--
2015-02-07T01:29:00JustinManual testing270271--2.333--
2017-10-27T20:29:47el groccoManual testing271272--4.667--
2020-03-29T06:32:56SRBaseManual testing272273--9.334--
2020-03-30T17:21:31SRBaseManual testing273274--18.67--
2020-11-08T21:34:05TheJudgerManual testing274275--37.34--
2020-11-08T21:34:05TheJudgerManual testing275276--74.67--


ECM factoring results:
Exponent "102477191" not found


Lucas-Lehmer results:
Exponent "102477191" not found


PRP results:
Exponent "102477191" not found


P-1 factor-bounds graph:
B1 = 4000000 (stage 1)
104
105
106
107
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
Last modified: 2021-02-03T19:13:14+00:00