is 2 394489 - 1
has 118754 decimal digits
takes 0.004 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L81440CFE43B64383double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26775.322671.6418%100000002000000000.28618.6061%75.608674.0823%2.4405%
PrimeNet2400.000052.5000%40001200000.000117.2719%0.000160.7041%8.2041%
GPU722440.000056.8182%70002000000.000212.8234%0.000362.3556%5.5374%
Difference+23+75.3225+14.8236%+9993000+199800000+0.2858-4.2173%+75.6084+11.7268%+11.7268%

Known prime factors (2 factors, 189.7 bits, 0.04808127% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
39448970734387697669524542789932582.5498965318132783109864
23 × 13 × 42853 × 2011644039997
2015-10-304285320116440399973,764,0811,540.62,877.5
39448917714572153132563311006377803511133107.127224525552716711534554909995
5 × 11 × 1471 × 2775175239066949317779
2020-05-18147127751752390669493177793.351e+112.125e+123.970e+12

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
39448912530294145780191270976684200902209896371747032377
43723223
58189.675
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-06-23T00:00:00ANONYMOUSv4_computers1000004000000---0.004--2.408%
2002-06-15T00:00:00ANONYMOUSv4_computers327683276800---0.003--1.685%
2002-08-24T00:00:00ANONYMOUSv4_computers655366553600---0.006--2.403%
2012-07-19T20:04:00alpertronManual testing10000000200000000---0.286--8.606%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-01T00:00:00ANONYMOUSv4_computers252253--0.002--
2000-04-27T00:00:00ANONYMOUSv4_computers21254--0.006--
2022-03-07T06:43:18LordJuliusManual testing254255--0.006--
2001-03-11T00:00:00ANONYMOUSv4_computers21256--0.024--
2002-01-22T00:00:00ANONYMOUSv4_computers21257--0.049--
2004-01-18T00:00:00ANONYMOUSv4_computers21258--0.097--
2009-01-05T16:57:00Sturle Sundeinteravia.ifi258259--0.097--
2009-01-11T15:41:00Sturle Sundegowin.ifi259260--0.195--
2011-02-27T23:11:00monstyuengling260261--0.389--
2015-08-13T13:31:00NRManual testing261262--0.779--


ECM factoring results:

Old Calculation Method

Total ECM effort:10.505 GHz-days
Estimated T-Level:26.117
DigitsB1CurvesCompleteFacMiss
2011000426 / 1004.2601.382%
2550000426 / 2801.52121.781%
30250000143 / 6400.22379.963%

New Calculation Method

Total ECM effort:10.505 GHz-days
Estimated T-Level:26.117
DigitsB1CompleteFacMiss
201100021.0460.000%
25500002.5487.824%
302500000.23778.918%
3510000000.01898.236%
4030000000.00199.888%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002832.979
250000250000001367.158
2500002500000010.053
2500002500000060.316


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-22T00:00:00ANONYMOUSv4_computers81440CFE43B643830.004


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-23T08:03:12Oliver KruseOllaptop
7073438769766952454278993
FD40CA4A79879F__no
2017-11-02T12:07:29kkmrkkblmbrbkc4.xlarge
7073438769766952454278993
FD40CA4A79879F__no
2020-04-18T09:00:18Oliver KruseAddPrpType5
7073438769766952454278993
A61F6B03BDE2D1__no
2020-05-18T11:04:47CrypticCluecruncher
7073438769766952454278993
177145721531325633110063778035111
A61F6B03BDE2D1D8no


P-1 factor-bounds graph:
B1 = 10000000, B2 = 200000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-07T06:43:18+00:00