is 2 108026407 - 1
has 32519189 decimal digits
takes 443.058 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
Actual276141.669064.4737%5500000550000032.70863.2054%174.377667.6791%5.1791%
PrimeNet2728.852862.5000%450000220000009.65865.4141%18.511367.9141%5.4141%
GPU72276141.669064.4737%7000002400000011.71233.9793%153.381368.4530%3.9793%
Difference---+4800000-18500000+20.9962-0.7739%+20.9962-0.7739%-0.7739%

Known prime factors (1 factor, 86.5 bits, 0.00008007% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1080264071091889430055942565027928732786.497505380795482692748
22 × 47 × 2713 × 8713 × 113721709
87131137217092021-01-26205,61136.89668.820

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-01-26T21:05:16Ernst W. MayerManual testing550000055000002786.49732.71886.165.423.205%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-26T02:54:00ANONYMOUSback113263264--0.018--
2010-09-09T07:47:00WPSs1264265--0.035--
2012-05-20T04:26:00omiXorpLLB03-z800-23265266--0.069--
2013-09-23T21:41:00shengManual testing266267--0.138--
2013-09-27T00:09:00SMoffatManual testing267268--0.277--
2013-09-28T23:30:00SMoffatManual testing268269--0.553--
2013-09-30T01:58:00SMoffatManual testing269270--1.107--
2013-09-30T22:51:00SMoffatManual testing270271--2.214--
2015-01-21T14:26:00Brandon VincentManual testing271272--4.427--
2019-12-08T18:08:39Niels_Mache_NextcloudManual testing272273--8.854--
2019-12-08T18:08:39Niels_Mache_NextcloudManual testing273274--17.71--
2020-10-18T17:16:01ktonyGPU72_TF274275--35.42--
2020-10-18T17:47:02ktonyGPU72_TF275276--70.84--


ECM factoring results:
Exponent "108026407" not found


Lucas-Lehmer results:
Exponent "108026407" not found


PRP results:
Exponent "108026407" not found


P-1 factor-bounds graph:
B1 = 5500000 (stage 1)
102
103
104
105
106
107
102
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: 2021-01-26T21:05:16+00:00