is 2 4719839 - 1
has 1420814 decimal digits
takes 0.621 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
Actual2676.295565.6716%----6.295565.6716%0.0000%
PrimeNet2610.065162.2951%200004000000.00783.1242%0.072963.4730%1.1780%
GPU722651.545864.6154%300006500000.01222.2801%1.557965.4222%0.8068%
Difference+2+4.7498+1.0563%-30000-650000-0.0122-2.2801%+4.7376+0.2494%+0.2494%

Known prime factors (4 factors, 173.6 bits, 0.00367861% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
47198399439679723.1701
1
-112.368e-131.909e-73.885e-7
4719839106196377511133.3061125
32 × 53
2008-09-081251253.015e-102.386e-54.857e-5
4719839202344406562571444.2022143552
26 × 33493
2008-09-3064334939.793e-70.00040.0007
471983990985988730632407448232272.946963867504067749
32 × 53 × 769 × 10369 × 253417
2019-04-2210369253417363.560.00450.0049

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
47198391002459714657219291856.476
47198391910066245396154215032167.372
47198392148824298635560515580072477.508
4719839858878527114787393308500318172996.116
4719839202842116065198292521503595975331100.678
47198399662382407358844842412368861307332106.252
471983918410505895208496169653948559530751136117.148
471983991209788300714733123178347680336432356739129.422
4719839173789265878375841914262815484482681012896943140.318
4719839195512903419764195939195972729004835226944776146150.454
471983918455790486405762653591135006545596339902508371108
719
53173.624
P-1 results:
No P-1 results for M4719839


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-30T21:36:00markrManual testing??44.202144.82785e-71.3291.03214e-6
2008-09-08T00:11:00Will EdgingtonManual testing??33.306115.90387e-111.3291.26218e-10


ECM factoring results:

Old Calculation Method

Total ECM effort:0.592 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.592 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.592


Lucas-Lehmer results:
No L-L results for M4719839


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-18T17:25:24Ducho_YYZPantalaimon
9439679
10619637751
20234440656257
BA8B91EE5C4F58__no
2018-01-05T08:40:04kkmrkkblmbrbkc4.xlarge
9439679
10619637751
20234440656257
BA8B91EE5C4F58__no
2019-04-22T17:45:04ATHec2-PRPCF
9439679
10619637751
20234440656257
9098598873063240744823
BA8B91EE5C4F584Ano


P-1 factor-bounds graph:
100
101
102
103
104
105
100
101
102
103
104
105
106
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2019-04-22T22:32:30+00:00