is 2 108681917 - 1
has 32716518 decimal digits
takes 476.993 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
Actual276140.814564.4737%5500000550000035.00143.2077%175.815967.6814%5.1814%
PrimeNet2728.799462.5000%4500002400000011.02915.4996%19.828467.9996%5.4996%
GPU72276140.814564.4737%7000002400000012.53343.9823%153.347968.4559%3.9823%
Difference---+4800000-18500000+22.4680-0.7745%+22.4680-0.7745%-0.7745%

Known prime factors (1 factor, 126.2 bits, 0.00011608% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1086819179459915912717112819863529394121767168938126.153435211126829733451419684168532
22 × 7 × 23 × 37 × 41 × 53 × 127 × 239 × 401 × 17093 × 78593 × 514049
2021-04-15785935140491.464e+90.65111.0179

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-04-15T19:25:50rucioManual testing5500000550000038126.15335.00954.070.003.208%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-27T10:08:00oodairaWin02263264--0.018--
2010-09-11T16:02:00Donna NoblePH9500264265--0.034--
2012-05-23T01:38:00Andrew Bdell_xps_17265266--0.069--
2013-09-30T18:00:00PEDManual testing266267--0.138--
2013-10-04T18:23:00PEDManual testing267268--0.275--
2013-10-12T07:12:00Cow_tippingManual testing268269--0.550--
2013-10-19T12:28:00RobishManual testing269270--1.100--
2013-10-23T10:19:00RobishManual testing270271--2.200--
2019-01-25T10:42:03Niels_Mache_NextcloudManual testing271272--4.401--
2019-09-11T10:30:22Niels_Mache_NextcloudManual testing272273--8.801--
2019-09-11T10:30:22Niels_Mache_NextcloudManual testing273274--17.60--
2021-04-13T03:12:01RichD0GPU72_TF274275--35.20--
2021-04-13T03:51:03RichD0GPU72_TF275276--70.41--


ECM factoring results:
Exponent "108681917" not found


Lucas-Lehmer results:
Exponent "108681917" not found


PRP results:
Exponent "108681917" not found


P-1 factor-bounds graph:
B1 = 5500000 (stage 1)
103
104
105
106
107
103
104
105
106
107
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2021-04-15T19:25:50+00:00