is 2 108418679 - 1
has 32637275 decimal digits
takes 475.838 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
Actual276141.156464.4737%5500000550000035.00143.2068%176.157867.6805%5.1805%
PrimeNet2728.820762.5000%4500002400000011.02915.4980%19.849867.9980%5.4980%
GPU72276141.156464.4737%7000002400000012.53343.9811%153.689868.4548%3.9811%
Difference---+4800000-18500000+22.4680-0.7743%+22.4680-0.7743%-0.7743%

Known prime factors (1 factor, 85.4 bits, 0.00007876% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
108418679508326069934087158283315992685.394234427348969123281
3 × 19 × 1459 × 18181 × 155045927
181811550459272021-03-0883,86553.867100.40

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-03-08T05:57:44Ernst W. MayerManual testing550000055000002685.39435.00951.770.003.207%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-04T00:08:00RichardUNKNOWN263264--0.018--
2010-09-10T22:57:00kiwiboybis264265--0.034--
2012-05-21T14:58:00HBendtzHAL9006265266--0.069--
2013-09-24T12:48:00GrunwalderGIMPcompute-0-7266267--0.138--
2013-09-25T12:26:00GrunwalderGIMPcompute-0-7267268--0.276--
2013-09-26T18:34:00GrunwalderGIMPcompute-0-7268269--0.551--
2013-09-28T02:54:00GrunwalderGIMPcompute-0-7269270--1.103--
2013-09-30T17:56:00ITSCP_-_Server3270271--2.206--
2015-01-26T13:40:00endless_mikeManual testing271272--4.411--
2019-10-13T06:35:58Niels_Mache_NextcloudManual testing272273--8.822--
2019-10-13T06:35:58Niels_Mache_NextcloudManual testing273274--17.64--
2020-09-25T09:30:07RichD0GPU72_TF274275--35.29--
2020-10-03T23:38:04ktonyGPU72_TF275276--70.58--


ECM factoring results:
Exponent "108418679" not found


Lucas-Lehmer results:
Exponent "108418679" not found


PRP results:
Exponent "108418679" not found


P-1 factor-bounds graph:
B1 = 5500000 (stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
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: 2021-03-08T05:57:44+00:00