is 2 101914217 - 1
has 30679237 decimal digits
takes 405.781 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
Actual277300.332664.9351 %805000158987509.39523.3698 %309.727866.1167 %
Target276150.165464.4737 %65000011000000038.14833.8493 %188.313765.8412 %
Difference+1+150.1672+0.4614 %+155000-94101250-28.7531-0.4795 %+121.4141+0.2755 %

Known prime factors (1 factor, 97.8 bits, 0.00009594% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1019142172708920305726106966700179693993097.7741329019829356147124547
3 × 132 × 52489 × 238723 × 209199643
2020-06-08238723209199643590,788,14167.106122.90

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-06-08Ben Deloi-0f01991c88c1c4629805000158987501223097.7749.683.711%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-03-141997rj7compa2632640.019
2010-08-15Mr-Plonklinux-i7-9202642650.037
2012-04-19Mr-PlonkLinux-i72652660.073
2013-08-26g0bManual testing2662670.147
2013-08-27Le ComteManual testing2672680.293
2014-07-09SMoffatManual testing2682690.587
2014-07-12Preben SManual testing2692701.173
2014-07-15ANONYMOUSManual testing2702712.346
2014-12-07Simon HarrisonManual testing2712724.693
2020-02-25Architects CubedGPU72_TF2722739.385
2020-03-18Architects CubedGPU72_TF27327418.77
2020-04-07Architects CubedGPU72_TF27427537.54
2020-04-20Architects CubedGPU72_TF27527675.08
2020-06-01RichD0GPU72_TF276277150.2


ECM factoring results:
No ECM results for M101914217


Lucas-Lehmer results:
No L-L results for M101914217


PRP results:
No PRP results for M101914217


CERT results:
No CERT results for M101914217


P-1 factor-bounds graph:
B1 = 805000, B2 = 15898750 (P-1 stage 2)
B1 = 805000 (P-1 stage 1)
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109
TF factor-bounds graph:
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264
this exponent TF target: 76
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00