is 2 11946787 - 1
has 3596342 decimal digits
takes 4.600 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 L-L tests remaining
ResidueStatus
L-L05A3902D01F36DD8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27140.017366.1972%43161891275216076.15687.6981%46.174168.7994%2.6022%
PrimeNet2640.297962.5000%5500015000000.07474.1111%0.372664.0417%1.5417%
GPU722684.989264.7059%8000020000000.10312.9391%5.092365.7432%1.0373%
Difference+3+35.0281+1.4913%+4236189+125521607+6.0537+4.7590%+41.0819+3.0561%+3.0561%

Known prime factors (1 factor, 75.0 bits, 0.00062796% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11946787383264395025414592561592375.0211604047996442117
1604047996442117
2021-08-1311604047996442117917.3648,787,12091,120,754

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-01-08T00:00:00ANONYMOUSv4_computers180000180000---0.100--1.004%
2001-08-12T00:00:00ANONYMOUSv4_computers180000180000---0.100--1.004%
2016-03-06T21:32:13ThaManual testing30000060000006---0.341--3.345%
2021-07-14T05:37:43LaurVManual testing4316189127521607---6.157--7.698%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-08-13T01:51:22LaurVZero818500000030000000027P+12375.02113.04


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-02-09T00:00:00S00030v4_computers?264--0.164--
2013-10-07T21:52:00lycornManual testing264265--0.313--
2013-10-20T06:15:00NesowaManual testing265266--0.626--
2016-03-03T15:31:29YxinityManual testing266267--1.251--
2018-01-18T22:59:34ramgeisManual testing267268--2.502--
2018-01-18T22:59:34ramgeisManual testing268269--5.004--
2021-05-19T06:09:15lycornManual testing269270--10.01--
2021-08-15T07:48:34SRBaseManual testing270271--20.02--


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)
2002-05-05T00:00:00ANONYMOUSv4_computers05A3902D01F36DD84.600
2004-05-11T00:00:00Team Prime Ribv4_computers05A3902D01F36DD84.600


PRP results:
Exponent "11946787" 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 = 300000, B2 = 6000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 180000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-08-15T07:48:34+00:00