is 2 6235739 - 1
has 1877145 decimal digits
takes 1.105 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4548496AD8DD46E4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2674.765165.6716%11500022712500.05973.2900%4.824866.8010%1.1294%
PrimeNet2620.098562.9032%260006000000.01473.3507%0.113264.1462%1.2430%
GPU722662.368465.1515%400009000000.02232.4326%2.390765.9992%0.8477%
Difference+1+2.3967+0.5201%+75000+1371250+0.0374+0.8574%+2.4342+0.8018%+0.8018%

Known prime factors (1 factor, 76.6 bits, 0.00122886% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
62357391168006572626510867435532476.6289365422226832384
210 × 3 × 3048640047797
2011-09-28102430486400477973,773.842,68379,719

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-07T00:00:00ANONYMOUSv4_computers2000075000---0.006--0.814%
2011-05-15T20:59:00markrManual testing1150002271250---0.060--3.290%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-21T00:00:00ANONYMOUSv4_computers21261--0.049--
1998-07-21T00:00:00ANONYMOUSv4_computers21262--0.099--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-27T00:00:00ANONYMOUSv4_computers4548496AD8DD46E41.105
2001-02-04T00:00:00ANONYMOUSv4_computers4548496AD8DD46E41.105


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-13T18:30:00kkmrkkblmbrbkc4.xlarge73BB341BBA73B3__no
2018-10-01T20:36:15NesowaLaptop
116800657262651086743553
73BB341BBA73B3__no


P-1 factor-bounds graph:
B1 = 115000, B2 = 2271250 (P-1 stage 2)
B1 = 115000 (P-1 stage 1)
B1 = 20000, B2 = 75000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
267
262
261
250
260
270
280
290
2100
Last modified: 2018-10-01T20:36:15+00:00