is 2 8154779 - 1
has 2454834 decimal digits
takes 2.129 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
Actual2687.309266.1765%----7.309266.1765%0.0000%
PrimeNet2630.195763.4921%360009000000.03153.6167%0.227264.8124%1.3204%
GPU722673.643765.6716%5500013000000.04652.6241%3.690266.5725%0.9008%
Difference+1+3.6655+0.5048%-55000-1300000-0.0465-2.6241%+3.6189-0.3960%-0.3960%

Known prime factors (3 factors, 163.6 bits, 0.00200578% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
81547798305115449681031549.56150921769
3 × 16973923		-3169739239.453e-60.35010.6540
815477937667174063428571651.742230951532
22 × 3 × 7 × 127 × 21649		2008-09-08127216495.551e-50.00050.0008
815477955359526962778408331962.264339429964704
25 × 3 × 17 × 207984047		2016-07-18322079840470.11504.29038.0130

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
8154779312830229260005198167394689027131101.303
8154779459767262665604505632574269594979934111.825
81547792085236938176041461134637087247988135114.006
81547791731813351149140873253983705858814875900665423574350163.567
P-1 results:
No P-1 results for M8154779


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T04:25:00Will EdgingtonManual testing??51.742161.87274e-54.5283.98264e-5
2016-07-18T14:28:34TJAOIManual testing262263*62.264190.0404.3330.081
2022-06-24T02:43:27LordJuliusManual testing263264--0.241--
2022-06-24T02:43:27LordJuliusManual testing264265--0.458--
2022-06-24T02:43:27LordJuliusManual testing265266--0.916--
2022-06-24T02:43:27LordJuliusManual testing266267--1.833--
2022-06-20T16:48:39FlaukrotistManual testing267268--3.665--


ECM factoring results:
No ECM results for M8154779


Lucas-Lehmer results:
No L-L results for M8154779


PRP results:
dateuseridcompidcofactorsres64PRP
2018-06-26T23:14:34kkmrkkblmbrbkc5.large
830511544968103
3766717406342857
5535952696277840833
35C176F0759F00__no
2020-02-21T07:53:12ATHec2-PRPCFDC
830511544968103
3766717406342857
5535952696277840833
35C176F0759F0078no


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
264
263
2
240
250
260
270
280
290
2100
Last modified: 2022-06-24T02:43:27+00:00