is 2 101205227 - 1
has 30465810 decimal digits
takes 402.958 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
Actual276151.217464.4737 %100000010000005.77331.7198 %156.990765.0847 %
Target276151.217464.4737 %65000011000000038.14833.8460 %189.365765.8400 %
Difference---+350000-109000000-32.3750-2.1263 %-32.3750-0.7554 %

Known prime factors (1 factor, 76.7 bits, 0.00007583% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1012052271262691279630130056779292476.741623827107087132
22 × 3 × 13 × 17 × 37 × 139 × 197 × 232171
2020-11-20197232171230.170.07410.1364

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-11-20KrieselManual testing1000000100000012476.7415.8081.720%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-03-151997rj7Manual testing2632640.019
2010-08-13carlos56amd6002642650.037
2011-09-18riccardo ubertiDuallie2652660.074
2013-10-28ANONYMOUS2662670.148
2014-04-02AnimAnim2672680.295
2014-04-22Andreas_TruetschManual testing2682690.591
2014-05-21Smok_bmvManual testing2692701.181
2014-05-28SatanManual testing2702712.363
2014-12-13SMoffatManual testing2712724.726
2020-03-04danc2GPU72_TF2722739.451
2020-03-19Hans LoeblichManual testing27327418.90
2020-10-14Kevin JagetManual testing274276113.4


ECM factoring results:
No ECM results for M101205227


Lucas-Lehmer results:
No L-L results for M101205227


PRP results:
No PRP results for M101205227


CERT results:
No CERT results for M101205227


P-1 factor-bounds graph:
B1 = 1000000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
TF factor-bounds graph:
276
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00