is 2 4481677 - 1
has 1349120 decimal digits
takes 0.559 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.630165.6716%----6.630165.6716%0.0000%
PrimeNet2610.068562.2951%190004000000.00723.0622%0.075763.4497%1.1546%
GPU722651.627964.6154%260005500000.00992.0895%1.637865.3548%0.7394%
Difference+2+5.0022+1.0563%-26000-550000-0.0099-2.0895%+4.9923+0.3169%+0.3169%

Known prime factors (2 factors, 106.9 bits, 0.00238535% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
44816774784548731671238.80053379
34 × 659
-816591.270e-82.034e-52.981e-5
44816773172115256185568060892168.10435389824569972
22 × 19 × 465655586447
2019-02-061946565558644717.3774,588.18,569.3

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
448167715177140025693716787889710831386333106.904
P-1 results:
No P-1 results for M4481677


Trial Factoring results:
No TF results for M4481677


ECM factoring results:

Old Calculation Method

Total ECM effort:0.185 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.185 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.185


Lucas-Lehmer results:
No L-L results for M4481677


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:10:28kkmrkkblmbrbkManual testing
478454873167
A06D6F5DA3F420__no
2018-02-15T18:26:29ATHec2-1xf
478454873167
A06D6F5DA3F420__no
2019-02-11T15:09:17-Anonymous-
478454873167
317211525618556806089
BA7F08BB4D1AFECFno
2019-02-11T16:05:54ATHec2-PRPCFDC
478454873167
317211525618556806089
BA7F08BB4D1AFECFno


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2019-02-11T16:05:54+00:00