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
0 primality tests remaining
ResidueStatus
L-LC4B77D951E5BC0F4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.082065.6716%6500010887500.03102.4679%5.113066.5188%0.8472%
PrimeNet2620.105162.9032%240005500000.01353.1935%0.118664.0879%1.1847%
GPU722662.525965.1515%360008000000.01992.2813%2.545865.9465%0.7950%
Difference+1+2.5561+0.5201%+29000+288750+0.0111+0.1866%+2.5672+0.5723%+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:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-01-08T00:00:00ANONYMOUSv4_computers2000020000---0.005--0.382%
2011-02-28T04:14:00harleeP4_2600650001088750---0.031--2.468%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-01T00:00:00ANONYMOUSv4_computers21261--0.053--
1998-06-14T00:00:00ANONYMOUSv4_computers21262--0.105--
2009-03-24T02:41:00GrunwalderGIMPManual testing262263--0.168--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-25T00:00:00ANONYMOUSv4_computersC4B77D951E5BC0F41.036
2001-01-28T00:00:00ANONYMOUSv4_computersC4B77D951E5BC0F41.036


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:04:09kkmrkkblmbrbkManual testing
23867055743449112399
A73237713E1C22__no
2018-08-30T04:30:30Luigi MorelliCS50X-C9
23867055743449112399
A73237713E1C22__no


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)
100
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105
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1010
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TF factor-bounds graph:
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261
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2100
Last modified: 2018-08-30T04:30:30+00:00