is 2 108512893 - 1
has 32665636 decimal digits
takes 476.251 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
Actual276141.033964.4737%5500000550000035.00143.2071%176.035367.6808%5.1808%
PrimeNet2728.813162.5000%4500002400000011.02915.4986%19.842167.9986%5.4986%
GPU72276141.033964.4737%7000002400000012.53343.9815%153.567268.4552%3.9815%
Difference---+4800000-18500000+22.4680-0.7744%+22.4680-0.7744%-0.7744%

Known prime factors (1 factor, 79.5 bits, 0.00007326% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1085128938512079386046349965332072479.4943922151161358471
107 × 211 × 13907 × 12491789
2021-04-0913907124917891,702.44.41498.0894

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-04-09T00:01:28Paul UnderwoodManual testing550000055000002479.49435.00952.570.003.207%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-06-27T01:57:00carlos56phenom810263264--0.018--
2010-09-18T19:47:00Team_Bundu264265--0.034--
2012-05-22T16:49:00Dalos Leedalosdesk265266--0.069--
2013-09-24T16:23:00Ryan PropperManual testing266267--0.138--
2014-08-25T07:29:00g0bManual testing267268--0.275--
2015-04-03T07:21:00g0bManual testing268269--0.551--
2015-04-06T03:01:00Andrew BManual testing269270--1.102--
2015-10-04T11:50:10Judge HaleManual testing270271--2.204--
2015-10-04T11:50:10Judge HaleManual testing271272--4.407--
2019-09-30T07:00:49Niels_Mache_NextcloudManual testing272273--8.815--
2019-09-30T07:00:49Niels_Mache_NextcloudManual testing273274--17.63--
2020-10-20T21:24:04ktonyGPU72_TF274275--35.26--
2020-10-20T21:51:03ktonyGPU72_TF275276--70.52--


ECM factoring results:
Exponent "108512893" not found


Lucas-Lehmer results:
Exponent "108512893" not found


PRP results:
Exponent "108512893" not found


P-1 factor-bounds graph:
B1 = 5500000 (stage 1)
103
104
105
106
107
103
104
105
106
107
108
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: 2021-04-09T00:01:28+00:00