is 2 79047317 - 1
has 23795614 decimal digits
takes 246.666 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
Actual27596.801664.0000 %665000131337506.08273.7254 %102.884365.3411 %
Target27596.801664.0000 %5000008500000023.09323.7771 %119.894865.3598 %
Difference---+165000-71866250-17.0105-0.0517 %-17.0105-0.0186 %

Known prime factors (1 factor, 80.7 bits, 0.00010210% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7904731719706189612677258213489932580.70512464806119021888
26 × 3 × 31 × 1217 × 1427 × 1205891
2016-08-09142712058913,934.50.30340.5552

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-08-09HBendtzHAL9007665000131337501222580.7056.0833.725%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212531.52000e-5
2000-02-01ANONYMOUSv4_computers212543.04000e-5
2001-06-17Jossv4_computers212570.000
2003-02-24Andreas Pippv4_computers212600.001
2004-02-07ANONYMOUSv4_computers212630.012
2016-04-05Mark RoseManual testing263264
2010-11-21ANONYMOUS2642650.047
2011-04-07Carsten KossendeyManual testing2652680.662
2013-01-22irreally9002Manual testing2682702.269
2013-06-16SMoffatManual testing2702713.025
2016-02-15RichD0Manual testing2712726.050
2016-07-05RichD0Manual testing27227312.10
2016-07-08AirSquirrelsManual testing27327572.60


ECM factoring results:
No ECM results for M79047317


Lucas-Lehmer results:
No L-L results for M79047317


PRP results:
No PRP results for M79047317


CERT results:
No CERT results for M79047317


P-1 factor-bounds graph:
B1 = 665000, B2 = 13133750 (P-1 stage 2)
B1 = 665000 (P-1 stage 1)
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108
TF factor-bounds graph:
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265
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this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00