Properties

Label 2-7e3-1.1-c1-0-15
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 $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 1.54·2-s + 2.37·3-s + 0.389·4-s + 0.315·5-s + 3.66·6-s − 2.48·8-s + 2.62·9-s + 0.487·10-s − 1.80·11-s + 0.923·12-s + 5.89·13-s + 0.748·15-s − 4.62·16-s + 4.31·17-s + 4.06·18-s − 6.30·19-s + 0.122·20-s − 2.79·22-s − 6.44·23-s − 5.90·24-s − 4.90·25-s + 9.11·26-s − 0.880·27-s + 7.97·29-s + 1.15·30-s − 5.19·31-s − 2.17·32-s + ⋯
L(s)  = 1  + 1.09·2-s + 1.36·3-s + 0.194·4-s + 0.141·5-s + 1.49·6-s − 0.880·8-s + 0.876·9-s + 0.154·10-s − 0.545·11-s + 0.266·12-s + 1.63·13-s + 0.193·15-s − 1.15·16-s + 1.04·17-s + 0.957·18-s − 1.44·19-s + 0.0274·20-s − 0.596·22-s − 1.34·23-s − 1.20·24-s − 0.980·25-s + 1.78·26-s − 0.169·27-s + 1.48·29-s + 0.211·30-s − 0.932·31-s − 0.383·32-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: \(0\)
Selberg data: \((2,\ 343,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(3.007841072\)
\(L(\frac12)\) \(\approx\) \(3.007841072\)
\(L(\frac{3}{2})\) 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 \( 1 - 1.54T + 2T^{2} \)
3 \( 1 - 2.37T + 3T^{2} \)
5 \( 1 - 0.315T + 5T^{2} \)
11 \( 1 + 1.80T + 11T^{2} \)
13 \( 1 - 5.89T + 13T^{2} \)
17 \( 1 - 4.31T + 17T^{2} \)
19 \( 1 + 6.30T + 19T^{2} \)
23 \( 1 + 6.44T + 23T^{2} \)
29 \( 1 - 7.97T + 29T^{2} \)
31 \( 1 + 5.19T + 31T^{2} \)
37 \( 1 + 1.41T + 37T^{2} \)
41 \( 1 + 2.17T + 41T^{2} \)
43 \( 1 - 1.04T + 43T^{2} \)
47 \( 1 - 1.17T + 47T^{2} \)
53 \( 1 + 4.10T + 53T^{2} \)
59 \( 1 - 8.37T + 59T^{2} \)
61 \( 1 - 5.54T + 61T^{2} \)
67 \( 1 - 9.80T + 67T^{2} \)
71 \( 1 - 1.21T + 71T^{2} \)
73 \( 1 - 8.12T + 73T^{2} \)
79 \( 1 + 1.13T + 79T^{2} \)
83 \( 1 + 3.71T + 83T^{2} \)
89 \( 1 - 16.7T + 89T^{2} \)
97 \( 1 - 9.25T + 97T^{2} \)
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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

−11.83489027859127973120180855080, −10.57050384052962119862430808956, −9.553651218396740778054403451989, −8.496806889908795144626737526805, −8.074429265801992241275856190430, −6.44440143228858030339941611123, −5.54808152758250428122576856094, −4.07369004315205910206857214549, −3.46142965391191330713614946577, −2.20516215307468580546734423589, 2.20516215307468580546734423589, 3.46142965391191330713614946577, 4.07369004315205910206857214549, 5.54808152758250428122576856094, 6.44440143228858030339941611123, 8.074429265801992241275856190430, 8.496806889908795144626737526805, 9.553651218396740778054403451989, 10.57050384052962119862430808956, 11.83489027859127973120180855080

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