is 2 5846891 - 1
has 1760090 decimal digits
takes 1.036 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LC4B77D951E5BC0F4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2675.082065.6716 %6500010887500.03102.4679 %5.113066.5188 %
Target2662.525965.1515 %3600040000000.06472.2813 %2.590665.9465 %
Difference+1+2.5561+0.5201 %+29000-2911250-0.0337+0.1866%+2.5224+0.5723 %

Known prime factors (1 factor, 64.4 bits, 0.00110096% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5846891238670557434491123992064.3722041003991989
2041003991989
2011-05-18120410039919891.146728,57553,370

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-01-08ANONYMOUSv4_computers2000020000--0.0050.453%
2011-02-28USAFSSP4_26006500010887506--0.0312.788%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-05-01ANONYMOUSv4_computers212610.026
1998-06-14ANONYMOUSv4_computers212620.053
2009-03-24GrunwalderGIMPManual testing2622630.168


ECM factoring results:
Total ECM effort:0.808 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.808


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-25ANONYMOUSv4_computersC4B77D951E5BC0F41.036
2001-01-28ANONYMOUSv4_computersC4B77D951E5BC0F41.036


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
23867055743449112399
A73237713E1C2229
2018-08-30Luigi MorelliCS50X-C9
23867055743449112399
A73237713E1C2229


CERT results:
No CERT results for M5846891


P-1 factor-bounds graph:
B1 = 65000, B2 = 1088750 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
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105
100
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107
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109
1010
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TF factor-bounds graph:
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262
261
this exponent TF target: 66
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00