is 2 485959 - 1
has 146289 decimal digits
takes 0.006 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
Actual26761.144971.6418 %30000001000000000.14157.2574 %61.286473.6999 %
Target2440.000056.8182 %800013000000.001313.9734 %0.001362.8522 %
Difference+23+61.1449+14.8236 %+2992000+98700000+0.1401-6.7160 %+61.2850+10.8477 %

Known prime factors (3 factors, 174.6 bits, 0.03592653% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
48595981641113826.28384
22 × 3 × 7
-471.873e-117.110e-81.390e-7
48595967788051496890890224632272.5226974667770006409
3 × 11 × 131 × 473923 × 3404321
2014-11-1947392334043212,431.90.01080.0165
485959650475878500027951515532375.78466927032784661664
25 × 2091469774520677
2016-07-0132209146977452067727,5521,945,9963,634,579

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-11-19alpertronManual testing30000001000000001222272.5220.14134.961%


Trial Factoring results:
5758596061626364656667
No TF results for M485959


ECM factoring results:
Total ECM effort:12.953 GHz-days
Estimated T-Level:26.435
DigitsB1CompleteFacMiss
201100023.8990.000%
25500003.0284.840%
302500000.28775.049%
3510000000.02297.832%
4030000000.00199.860%


ECM Summary

B1B2factorcurvesGHz-days
5000050000001952.523
500005000000861.113
250000250000001449.317


Lucas-Lehmer results:
No L-L results for M485959


PRP results:
dateuseridcompidcofactorsres64
2017-09-26Oliver KruseDoppelherz
81641113
6778805149689089022463
65047587850002795151553
18A8992015EC0B7F
2017-09-27Oliver KruseManual testing
81641113
6778805149689089022463
65047587850002795151553
18A8992015EC0B7F
2017-10-13Oliver KruseGTX-3
81641113
6778805149689089022463
65047587850002795151553
18A8992015EC0B7F
2017-12-16ATHxps
81641113
6778805149689089022463
65047587850002795151553
18A8992015EC0B7F
2020-04-18Oliver KruseAddPrpType5
81641113
6778805149689089022463
65047587850002795151553
FFD276A39F82C700


CERT results:
No CERT results for M485959


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=26.44 ~= 71-bit
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Last modified: 2024-03-13T02:15:48+00:00