is 2 80624561 - 1
has 24270412 decimal digits
takes 251.588 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
Actual27594.907964.0000 %715000146575006.67223.8517 %101.580265.3866 %
Target27594.907964.0000 %5000008500000023.09323.7865 %118.001165.3631 %
Difference---+215000-70342500-16.4209+0.0653%-16.4209+0.0235 %

Known prime factors (1 factor, 75.7 bits, 0.00009392% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
80624561625012763764895319936892375.726387606925242604
22 × 17 × 23 × 113 × 907 × 2418071
2017-02-119072418071129.500.60001.1133

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-02-11bamtest7150001465750022375.7266.8873.852%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-10Architects Cubedm1_342642650.046
2011-01-25ANONYMOUSManual testing2652660.093
2011-01-26firejugglerManual testing2662680.556
2011-01-26ANONYMOUSManual testing2672680.371
2011-01-27firejugglerManual testing2682690.741
2012-04-11sikafarmi_rendering_farmManual testing2692701.483
2015-02-12monstManual testing2702712.966
2016-06-09Judge HaleManual testing27127317.80
2016-10-23RichD0Manual testing27327423.73
2016-10-26AirSquirrelsManual testing27427547.46


ECM factoring results:
No ECM results for M80624561


Lucas-Lehmer results:
No L-L results for M80624561


PRP results:
No PRP results for M80624561


CERT results:
No CERT results for M80624561


P-1 factor-bounds graph:
B1 = 715000, B2 = 14657500 (P-1 stage 2)
B1 = 715000 (P-1 stage 1)
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TF factor-bounds graph:
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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