is 2 108268067 - 1
has 32591936 decimal digits
takes 475.177 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
Actual276141.352864.4737%5500000550000035.00143.2063%176.354267.6799%5.1799%
PrimeNet2728.833062.5000%4500002400000011.02915.4971%19.862167.9971%5.4971%
GPU72276141.352864.4737%7000002400000012.53343.9804%153.886168.4541%3.9804%
Difference---+4800000-18500000+22.4680-0.7742%+22.4680-0.7742%-0.7742%

Known prime factors (1 factor, 88.1 bits, 0.00008141% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1082680673424080142711138916475236632788.1461581297347218334893
7 × 17 × 19 × 61 × 294313 × 38955941
294313389559412021-02-23964,10215.27825.227

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-02-23T06:31:38Ernst W. MayerManual testing550000055000002788.14635.00950.470.003.206%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-26T14:37:00Donna NoblePH9500263264--0.018--
2010-09-13T23:08:00Jens BolmJMBDell264265--0.035--
2012-05-23T03:34:00omiXorpLLB03-z800-19265266--0.069--
2013-10-13T18:26:00processinfoManual testing266268--0.414--
2013-10-13T18:26:00processinfoManual testing268269--0.552--
2013-10-13T18:26:00processinfoManual testing269270--1.104--
2013-10-13T18:26:00processinfoManual testing270271--2.209--
2015-01-24T10:00:00Youcef LManual testing271272--4.417--
2015-01-24T10:00:00Youcef LManual testing272273--8.835--
2015-01-24T10:00:00Youcef LManual testing273274--17.67--
2015-01-24T10:00:00Youcef LManual testing274275--35.34--
2020-01-23T23:45:24xx005fs_TFManual testing275276--70.68--


ECM factoring results:
Exponent "108268067" not found


Lucas-Lehmer results:
Exponent "108268067" not found


PRP results:
Exponent "108268067" 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: 2021-02-23T06:31:38+00:00