is 2 104915617 - 1
has 31582748 decimal digits
takes 417.732 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP6A1B1A43E9136B__
unverified PRP test

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual277291.740864.9351 %17500003400000020.24744.2888 %311.988266.4389 %
Target276145.869664.4737 %65000012000000041.29373.9266 %187.163365.8687 %
Difference+1+145.8712+0.4614 %+1100000-86000000-21.0463+0.3622%+124.8249+0.5703 %

Known prime factors:
No known factors for M104915617

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-06-29Runtime ErrorManual testing17500003400000012--20.864.690%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-19Dalos Leedalosdesk2632640.019
2010-08-29Torchwood InstituteGMS-E72002642650.036
2012-05-08mmVIR0042652660.071
2013-09-09willmoreManual testing2662670.142
2014-05-12SMoffatManual testing2672680.285
2014-06-08SMoffatManual testing2682690.570
2014-06-11Quantum SingularityManual testing2692701.140
2014-06-24Quantum SingularityManual testing2702726.838
2020-01-25Architects CubedManual testing2722739.117
2020-01-25Hans LoeblichManual testing27327418.23
2020-05-03TheJudgerManual testing274277255.3


ECM factoring results:
No ECM results for M104915617


Lucas-Lehmer results:
No L-L results for M104915617


PRP results:
dateuseridcompidcofactorsres64
2020-07-07Runtime ErrorManual testing6A1B1A43E9136B__


CERT results:
No CERT results for M104915617


P-1 factor-bounds graph:
B1 = 1750000, B2 = 34000000 (P-1 stage 2)
B1 = 1750000 (P-1 stage 1)
105
106
107
105
106
107
108
TF factor-bounds graph:
277
274
273
272
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