is 2 101865047 - 1
has 30664435 decimal digits
takes 405.586 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
Actual276150.237964.4737 %8450008450004.87851.6038 %155.116465.0435 %
Target276150.237964.4737 %65000011000000038.14833.8491 %188.386265.8411 %
Difference---+195000-109155000-33.2698-2.2453 %-33.2698-0.7977 %

Known prime factors (1 factor, 82.1 bits, 0.00008056% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
10186504750476807187910022637212572582.06224776313698608524
22 × 34 × 13 × 47 × 127 × 24419 × 40357
2020-12-31244194035712,2880.14600.2869

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-12-31tottenhoffpc-201184500084500012582.0625.0251.604%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-03-011997rj7compa2632640.019
2010-08-15Jud McCranieupstairs2642650.037
2012-04-21Richardsvn_022652660.073
2013-08-27SMoffatManual testing2662670.147
2013-08-27RobishManual testing2672690.880
2013-08-30RobishManual testing2692701.174
2013-09-01RobishManual testing2702712.347
2014-12-22josiboziben2712724.695
2020-01-31ixfd64Manual testing27227428.17
2020-10-10TheJudgerManual testing274276112.7


ECM factoring results:
No ECM results for M101865047


Lucas-Lehmer results:
No L-L results for M101865047


PRP results:
No PRP results for M101865047


CERT results:
No CERT results for M101865047


P-1 factor-bounds graph:
B1 = 845000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
276
274
272
271
270
269
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00