is 2 11944171 - 1
has 3595554 decimal digits
takes 4.599 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L32FBAD1217DD1C3Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27280.067066.6667%61891071856732108.91417.7324%88.981169.2441%2.5775%
PrimeNet2640.298062.5000%5500015000000.07474.1110%0.372764.0416%1.5416%
GPU722684.990364.7059%8000020000000.10312.9390%5.093365.7432%1.0373%
Difference+4+75.0767+1.9608%+6109107+183673210+8.8110+4.7934%+83.8877+3.5010%+3.5010%

Known prime factors:
No known factors for M11944171

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-05-11T00:00:00Architects Cubedv4_computers700001155000---0.072--1.524%
2015-10-20T02:50:39Sid & AndyWoody13000022750006---0.138--2.077%
2020-03-09T20:04:56Aaron HavilandManual testing380000874000012---0.466--3.379%
2021-07-14T06:46:07LaurVManual testing4316189127521607---6.157--7.106%
2021-08-02T00:16:29LaurVManual testing6189107185673210---8.914--7.732%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-02-16T00:00:00ANONYMOUSv4_computers21264--0.298--
2013-10-07T21:52:00lycornManual testing264265--0.313--
2013-10-20T06:14:00NesowaManual testing265266--0.626--
2016-03-03T15:31:28YxinityManual testing266267--1.251--
2018-01-21T23:54:52ramgeisManual testing267268--2.503--
2018-01-21T23:54:52ramgeisManual testing268269--5.005--
2018-02-05T12:37:12Oliver KruseManual testing267272--77.58--


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)
2001-06-17T00:00:00ANONYMOUSv4_computers32FBAD1217DD1C3F4.599
2004-05-25T00:00:00ANONYMOUSv4_computers32FBAD1217DD1C3F4.599


PRP results:
No PRP results for M11944171


P-1 factor-bounds graph:
B1 = 6189107, B2 = 185673210 (P-1 stage 2)
B1 = 4316189, B2 = 127521607 (P-1 stage 2)
B1 = 6189107 (P-1 stage 1)
B1 = 4316189 (P-1 stage 1)
B1 = 380000, B2 = 8740000 (P-1 stage 2)
B1 = 380000 (P-1 stage 1)
B1 = 130000, B2 = 2275000 (P-1 stage 2)
B1 = 130000 (P-1 stage 1)
B1 = 70000, B2 = 1155000 (P-1 stage 2)
B1 = 70000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-08-02T00:16:29+00:00