is 2 4657567 - 1
has 1402068 decimal digits
takes 0.613 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF21CDF304DC47E54double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.379765.6716%----6.379765.6716%0.0000%
PrimeNet2610.066062.2951%200004000000.00783.1172%0.073763.4704%1.1753%
GPU722651.566464.6154%280006000000.01132.1918%1.577765.3909%0.7755%
Difference+2+4.8133+1.0563%-28000-600000-0.0113-2.1918%+4.8020+0.2807%+0.2807%

Known prime factors (2 factors, 132.9 bits, 0.00285444% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
465756737603317546697290971961.706403679834844
22 × 3 × 11 × 132 × 83 × 218021
2009-09-071692180210.10740.00230.0042
465756727921182320300179788172271.242299739996443424
25 × 3 × 17 × 19 × 53 × 131 × 1392271
2019-03-161311392271201.860.01450.0270

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
46575671049929085069477930919116487286487453824941132.947
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-09-07T13:50:00Carsten Kossendeydurandal1961.706-1.226-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-06-01T00:00:00ANONYMOUSv4_computers21261--0.066--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.393 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.393 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.393


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-08-09T00:00:00ANONYMOUSv4_computersF21CDF304DC47E540.613
2000-02-01T00:00:00ANONYMOUSv4_computersF21CDF304DC47E540.613
2000-03-15T00:00:00ANONYMOUSv4_computersF21CDF304DC47E540.613
2000-04-12T00:00:00ANONYMOUSv4_computersF21CDF304DC47E540.613


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:15:17kkmrkkblmbrbkManual testing
3760331754669729097
EB19949CB2F39F__no
2018-03-17T17:07:34BattlemaxxWork-2
3760331754669729097
EB19949CB2F39F__no
2019-03-17T14:09:22artorollofourth
3760331754669729097
2792118232030017978817
F139BCA11AC65DF7no
2019-03-18T06:06:00kkmrkkblmbrbkc5.large
3760331754669729097
2792118232030017978817
F139BCA11AC65DF7no


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
TF factor-bounds graph:
267
261
250
260
270
280
290
2100
Last modified: 2019-03-18T06:06:00+00:00