is 2 108254893 - 1
has 32587970 decimal digits
takes 475.119 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
Actual276141.370064.4737%5500000550000035.00143.2062%176.371467.6799%5.1799%
PrimeNet2728.834162.5000%4500002400000011.02915.4970%19.863267.9970%5.4970%
GPU72276141.370064.4737%7000002400000012.53343.9804%153.903368.4540%3.9804%
Difference---+4800000-18500000+22.4680-0.7741%+22.4680-0.7741%-0.7741%

Known prime factors (1 factor, 90.5 bits, 0.00008360% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
10825489317479966530986232555212418172890.4988073522612500403356
22 × 19 × 2843 × 777463 × 48061009
777463480610092021-02-043,006,08921.34231.123

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-02-04T09:23:57rucioManual testing550000055000002890.49835.00950.270.003.206%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-26T18:21:00lindedskynet-backup263264--0.018--
2010-09-11T17:25:00RichardUNKNOWN264265--0.035--
2012-05-20T15:00:00sasaki3mate_ma2265266--0.069--
2013-10-08T13:14:00processinfoManual testing266268--0.414--
2013-10-08T13:14:00processinfoManual testing268269--0.552--
2013-10-08T13:14:00processinfoManual testing269270--1.104--
2013-10-08T13:14:00processinfoManual testing270271--2.209--
2015-02-06T04:58:00XebecerManual testing271272--4.418--
2019-11-08T09:35:03Niels_Mache_NextcloudManual testing272273--8.836--
2019-11-08T09:35:03Niels_Mache_NextcloudManual testing273274--17.67--
2020-10-22T10:43:13ktonyGPU72_TF274275--35.34--
2020-10-28T05:56:05ktonyGPU72_TF275276--70.69--


ECM factoring results:
Exponent "108254893" not found


Lucas-Lehmer results:
Exponent "108254893" not found


PRP results:
Exponent "108254893" not found


P-1 factor-bounds graph:
B1 = 5500000 (stage 1)
104
105
106
107
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
266
265
264
250
260
270
280
290
2100
Last modified: 2021-02-04T09:23:57+00:00