is 2 11950403 - 1
has 3597430 decimal digits
takes 4.601 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 L-L tests remaining
ResidueStatus
L-LFD0B8294F14C3FCBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27019.995265.7143%43161891275216076.15688.3288%26.152068.5699%2.8556%
PrimeNet2640.297862.5000%5500015000000.07474.1113%0.372564.0417%1.5417%
GPU722684.987764.7059%8000020000000.10312.9393%5.090765.7433%1.0374%
Difference+2+15.0075+1.0084%+4236189+125521607+6.0537+5.3896%+21.0613+2.8266%+2.8266%

Known prime factors (1 factor, 85.7 bits, 0.00071682% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11950403612738709540436163239678172685.6632563673834013949836
22 × 32 × 97 × 4466923 × 164353921
2021-07-2844669231643539211,129,1467.35669.3364

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-04-08T00:00:00MadPoov4_computers125000906250---0.094--2.052%
2019-05-08T16:13:28riccardo ubertiNomad2C430000850000012---0.485--4.181%
2021-07-14T01:38:44LaurVManual testing4316189127521607---6.157--8.329%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-28T07:35:37LaurVZero818500000030000000027P-12685.66313.04


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-02-09T00:00:00ANONYMOUSv4_computers?264--0.164--
2013-10-06T23:34:00lycornManual testing264265--0.313--
2013-10-20T06:15:00NesowaManual testing265266--0.625--
2016-03-03T15:31:30YxinityManual testing266267--1.251--
2018-01-07T22:48:50ramgeisManual testing267268--2.501--
2018-01-07T22:48:50ramgeisManual testing268269--5.003--
2021-05-19T11:10:10lycornManual testing269270--10.01--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.171 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:1.171 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.06593.752%
25500000.00699.419%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.171


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-06-23T00:00:00MadPoov4_computersFD0B8294F14C3FCB4.601
2004-06-21T00:00:00ANONYMOUSv4_computersFD0B8294F14C3FCB4.601


PRP results:
Exponent "11950403" not found


P-1 factor-bounds graph:
B1 = 5000000, B2 = 300000000 (P-1 stage 2)
B1 = 4316189, B2 = 127521607 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 4316189 (P-1 stage 1)
B1 = 430000, B2 = 8500000 (P-1 stage 2)
B1 = 430000 (P-1 stage 1)
B1 = 125000, B2 = 906250 (P-1 stage 2)
B1 = 125000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-07-28T07:35:37+00:00