is 2 102407687 - 1
has 30827786 decimal digits
takes 407.746 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
Actual276149.441864.4737 %10000003000000014.89524.3073 %164.337066.0039 %
Target276149.441864.4737 %65000011000000038.14833.8516 %187.590165.8420 %
Difference---+350000-80000000-23.2531+0.4557%-23.2531+0.1619 %

Known prime factors (1 factor, 94.1 bits, 0.00009192% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
102407687217493777620962427270833191532994.135106190162082736243848
23 × 32 × 7 × 137 × 613 × 616307 × 4070761
2021-01-30616307407076165,530,3244.64477.2414

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-01-30KrieselManual testing10000003000000022994.13514.984.307%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-05-171997rj7Manual testing2632640.019
2010-08-18Torchwood InstitutePH95002642650.036
2012-04-22D5 Fujitsu SiemensD5FS2652660.073
2013-08-28PascalBieriManual testing2662670.146
2013-08-30ANONYMOUS2672680.292
2014-05-10beardog32logmein322682690.584
2014-05-20SatanManual testing2692701.168
2014-06-09ITSMasterStation2702712.335
2018-12-29el groccoManual testing2712724.670
2019-01-16Niels_Mache_NextcloudManual testing271272
2020-03-06el groccoManual testing2722739.340
2020-03-30SRBaseManual testing27327418.68
2020-09-23RichD0GPU72_TF27427537.36
2020-09-27RichD0GPU72_TF27527674.72


ECM factoring results:
No ECM results for M102407687


Lucas-Lehmer results:
No L-L results for M102407687


PRP results:
No PRP results for M102407687


CERT results:
No CERT results for M102407687


P-1 factor-bounds graph:
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
275
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
290
2100
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Last modified: 2024-03-13T02:15:48+00:00