Properties

Label 2-7e3-1.1-c1-0-20
Degree $2$
Conductor $343$
Sign $-1$
Analytic cond. $2.73886$
Root an. cond. $1.65495$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 0.246·2-s − 1.93·4-s − 0.972·8-s − 3·9-s − 6.04·11-s + 3.63·16-s − 0.740·18-s − 1.49·22-s + 0.850·23-s − 5·25-s − 7.02·29-s + 2.84·32-s + 5.81·36-s − 8.98·37-s + 13.1·43-s + 11.7·44-s + 0.210·46-s − 1.23·50-s + 13.6·53-s − 1.73·58-s − 6.57·64-s + 14.9·67-s − 12.1·71-s + 2.91·72-s − 2.21·74-s − 14.0·79-s + 9·81-s + ⋯
L(s)  = 1  + 0.174·2-s − 0.969·4-s − 0.343·8-s − 9-s − 1.82·11-s + 0.909·16-s − 0.174·18-s − 0.318·22-s + 0.177·23-s − 25-s − 1.30·29-s + 0.502·32-s + 0.969·36-s − 1.47·37-s + 1.99·43-s + 1.76·44-s + 0.0309·46-s − 0.174·50-s + 1.86·53-s − 0.227·58-s − 0.821·64-s + 1.82·67-s − 1.43·71-s + 0.343·72-s − 0.257·74-s − 1.58·79-s + 81-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 343 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 343 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(343\)    =    \(7^{3}\)
Sign: $-1$
Analytic conductor: \(2.73886\)
Root analytic conductor: \(1.65495\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 343,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 \)
good2 \( 1 - 0.246T + 2T^{2} \)
3 \( 1 + 3T^{2} \)
5 \( 1 + 5T^{2} \)
11 \( 1 + 6.04T + 11T^{2} \)
13 \( 1 + 13T^{2} \)
17 \( 1 + 17T^{2} \)
19 \( 1 + 19T^{2} \)
23 \( 1 - 0.850T + 23T^{2} \)
29 \( 1 + 7.02T + 29T^{2} \)
31 \( 1 + 31T^{2} \)
37 \( 1 + 8.98T + 37T^{2} \)
41 \( 1 + 41T^{2} \)
43 \( 1 - 13.1T + 43T^{2} \)
47 \( 1 + 47T^{2} \)
53 \( 1 - 13.6T + 53T^{2} \)
59 \( 1 + 59T^{2} \)
61 \( 1 + 61T^{2} \)
67 \( 1 - 14.9T + 67T^{2} \)
71 \( 1 + 12.1T + 71T^{2} \)
73 \( 1 + 73T^{2} \)
79 \( 1 + 14.0T + 79T^{2} \)
83 \( 1 + 83T^{2} \)
89 \( 1 + 89T^{2} \)
97 \( 1 + 97T^{2} \)
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   \(L(s) = \displaystyle\prod_p \ \prod_{j=1}^{2} (1 - \alpha_{j,p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−10.98182200365516258508268747942, −10.15328161263522334241712262199, −9.119959185987997874458119466685, −8.293490577303394711747399990243, −7.46583979773450980467251956817, −5.70402459824507246282884564819, −5.28405997773415472992370215891, −3.88499265972104844070750824198, −2.60735752415256012047946377410, 0, 2.60735752415256012047946377410, 3.88499265972104844070750824198, 5.28405997773415472992370215891, 5.70402459824507246282884564819, 7.46583979773450980467251956817, 8.293490577303394711747399990243, 9.119959185987997874458119466685, 10.15328161263522334241712262199, 10.98182200365516258508268747942

Graph of the $Z$-function along the critical line