is 2 70123763 - 1
has 21109357 decimal digits
takes 187.484 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
Actual275109.120064.0000 %600000117000004.67053.5390 %113.790665.2740 %
Target27454.558863.5135 %4500008000000018.54673.9997 %73.105564.9729 %
Difference+1+54.5613+0.4865 %+150000-68300000-13.8762-0.4608 %+40.6851+0.3012 %

Known prime factors (1 factor, 104.9 bits, 0.00014957% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
701237633750586934451357648330943804528932104.887267426245683033128750588
22 × 3 × 31 × 397 × 2927 × 9199 × 19157 × 3510587
2014-09-211915735105872.149e+90.81171.3849

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-09-21TheJudgerManual testing6000001170000012232104.8874.9253.903%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2007-07-04Amperiov4_computers212630.014
2008-01-15Amperiov4_computers212640.028
2009-08-12PrimeCruncherv4_computers212703.357
2009-08-16PrimeCruncherv4_computers212701.705
2013-04-16b3gat2702713.410
2014-08-29srow7Manual testing2712726.820
2014-09-07RichD0Manual testing27227313.64
2014-09-13Mark RoseManual testing27327427.28
2014-09-15AK76Manual testing27427554.56


ECM factoring results:
No ECM results for M70123763


Lucas-Lehmer results:
No L-L results for M70123763


PRP results:
No PRP results for M70123763


CERT results:
No CERT results for M70123763


P-1 factor-bounds graph:
B1 = 600000, B2 = 11700000 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
275
274
273
272
271
270
264
263
this exponent TF target: 74
TF double-checked to: 67
250
260
270
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290
2100
2110
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Last modified: 2024-03-13T02:15:48+00:00