is 2 108476227 - 1
has 32654599 decimal digits
takes 476.090 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276141.081564.4737 %9130009130005.81021.6724 %146.891865.0678 %
Target276141.081564.4737 %70000012000000045.81873.9813 %186.900265.8881 %
Difference---+213000-119087000-40.0085-2.3089 %-40.0085-0.8203 %

Known prime factors (1 factor, 94.1 bits, 0.00008671% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
108476227207049221230459553193685623432994.06495435298109354205873
13 × 71 × 881 × 16381 × 40151 × 178441
2022-01-094015117844159,983,1020.30350.5200

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-01-09Ben Deloi-0920dfb0e7dc6edd891300091300012994.0645.4301.672%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-27sasaki3tuke32632640.018
2010-09-10sasaki3MATE_J2642650.034
2012-05-21Corbyguyhome2652660.069
2013-10-12Cow_tippingManual testing2662670.138
2013-10-14ChrisS94Manual testing2672680.276
2015-04-03g0bManual testing2682690.551
2015-04-27roemer2201HPCC-FK2692701.102
2015-05-13Matthijs Coster2702712.204
2019-01-27Niels_Mache_NextcloudManual testing2712724.409
2019-10-06Niels_Mache_NextcloudManual testing27227426.45
2021-04-26TheJudgerManual testing274276105.8


ECM factoring results:
No ECM results for M108476227


Lucas-Lehmer results:
No L-L results for M108476227


PRP results:
No PRP results for M108476227


CERT results:
No CERT results for M108476227


P-1 factor-bounds graph:
B1 = 913000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
276
274
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00