Properties

Label 2-7e3-1.1-c1-0-12
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  + 0.554·2-s + 3.09·3-s − 1.69·4-s + 1.37·5-s + 1.71·6-s − 2.04·8-s + 6.60·9-s + 0.765·10-s + 1.80·11-s − 5.24·12-s − 4.20·13-s + 4.27·15-s + 2.24·16-s − 4.47·17-s + 3.66·18-s + 5.58·19-s − 2.33·20-s + 22-s − 0.0489·23-s − 6.34·24-s − 3.09·25-s − 2.33·26-s + 11.1·27-s − 3.15·29-s + 2.37·30-s − 6.34·31-s + 5.34·32-s + ⋯
L(s)  = 1  + 0.392·2-s + 1.78·3-s − 0.846·4-s + 0.616·5-s + 0.702·6-s − 0.724·8-s + 2.20·9-s + 0.242·10-s + 0.543·11-s − 1.51·12-s − 1.16·13-s + 1.10·15-s + 0.561·16-s − 1.08·17-s + 0.863·18-s + 1.28·19-s − 0.521·20-s + 0.213·22-s − 0.0101·23-s − 1.29·24-s − 0.619·25-s − 0.457·26-s + 2.14·27-s − 0.586·29-s + 0.433·30-s − 1.14·31-s + 0.944·32-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

\(L(1)\) \(\approx\) \(2.441176902\)
\(L(\frac12)\) \(\approx\) \(2.441176902\)
\(L(\frac{3}{2})\) 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 \( 1 - 0.554T + 2T^{2} \)
3 \( 1 - 3.09T + 3T^{2} \)
5 \( 1 - 1.37T + 5T^{2} \)
11 \( 1 - 1.80T + 11T^{2} \)
13 \( 1 + 4.20T + 13T^{2} \)
17 \( 1 + 4.47T + 17T^{2} \)
19 \( 1 - 5.58T + 19T^{2} \)
23 \( 1 + 0.0489T + 23T^{2} \)
29 \( 1 + 3.15T + 29T^{2} \)
31 \( 1 + 6.34T + 31T^{2} \)
37 \( 1 - 3.18T + 37T^{2} \)
41 \( 1 + 9.44T + 41T^{2} \)
43 \( 1 - 2.45T + 43T^{2} \)
47 \( 1 + 9.10T + 47T^{2} \)
53 \( 1 - 9.74T + 53T^{2} \)
59 \( 1 - 7.30T + 59T^{2} \)
61 \( 1 + 0.954T + 61T^{2} \)
67 \( 1 + 1.43T + 67T^{2} \)
71 \( 1 + 2.13T + 71T^{2} \)
73 \( 1 + 0.273T + 73T^{2} \)
79 \( 1 - 2.18T + 79T^{2} \)
83 \( 1 - 4.20T + 83T^{2} \)
89 \( 1 - 7.45T + 89T^{2} \)
97 \( 1 + 5.70T + 97T^{2} \)
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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

−11.78221235195679247677267704486, −10.04660990464125841045275335627, −9.458435488138813377901750849334, −8.944517655480454413582485881644, −7.918066961256594855003083206825, −6.93644201622684401967235448956, −5.35370927957026137542461543990, −4.22084091148520409239888904639, −3.23975346116292648871460609014, −2.00944975525541676376834252159, 2.00944975525541676376834252159, 3.23975346116292648871460609014, 4.22084091148520409239888904639, 5.35370927957026137542461543990, 6.93644201622684401967235448956, 7.918066961256594855003083206825, 8.944517655480454413582485881644, 9.458435488138813377901750849334, 10.04660990464125841045275335627, 11.78221235195679247677267704486

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