is 2 6323197 - 1
has 1903472 decimal digits
takes 1.121 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA7F28DD9D8C8A71Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2674.699265.6716%350004812500.01521.7596%4.714466.2757%0.6040%
PrimeNet2620.097262.9032%260006000000.01473.3583%0.111964.1490%1.2458%
GPU722662.335665.1515%4500010000000.02492.5676%2.360566.0463%0.8948%
Difference+1+2.3636+0.5201%-10000-518750-0.0097-0.8080%+2.3539+0.2294%+0.2294%

Known prime factors (1 factor, 68.8 bits, 0.00108795% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
63231975113838035498672104492168.79340437124096392
23 × 32 × 561626723561
2011-10-31956162672356112.1527,863.114,686

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-06-14T21:44:00Carsten Kossendeyleela35000481250---0.015--1.760%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-06-20T00:00:00ANONYMOUSv4_computers21262--0.097--


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)
1998-11-28T00:00:00BigBrotherv4_computersEEC1B023276FB3__1.121
1999-09-22T00:00:00ANONYMOUSv4_computersA7F28DD9D8C8A71D1.121
2001-05-13T00:00:00ANONYMOUSv4_computersA7F28DD9D8C8A71D1.121


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-26T15:00:04kkmrkkblmbrbkc4.xlarge
511383803549867210449
D3B766C08E7B71__no
2018-09-27T03:12:31ANONYMOUS
511383803549867210449
D3B766C08E7B71__no


P-1 factor-bounds graph:
B1 = 35000, B2 = 481250 (P-1 stage 2)
B1 = 35000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
262
250
260
270
280
290
2100
Last modified: 2018-09-27T03:12:31+00:00