Properties

Label 2-931-1.1-c1-0-40
Degree $2$
Conductor $931$
Sign $-1$
Analytic cond. $7.43407$
Root an. cond. $2.72654$
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  − 2.61·2-s + 2.61·3-s + 4.85·4-s − 2.23·5-s − 6.85·6-s − 7.47·8-s + 3.85·9-s + 5.85·10-s − 5.61·11-s + 12.7·12-s − 13-s − 5.85·15-s + 9.85·16-s + 4.85·17-s − 10.0·18-s + 19-s − 10.8·20-s + 14.7·22-s − 3·23-s − 19.5·24-s + 2.61·26-s + 2.23·27-s − 5.61·29-s + 15.3·30-s + 0.854·31-s − 10.8·32-s − 14.7·33-s + ⋯
L(s)  = 1  − 1.85·2-s + 1.51·3-s + 2.42·4-s − 0.999·5-s − 2.79·6-s − 2.64·8-s + 1.28·9-s + 1.85·10-s − 1.69·11-s + 3.66·12-s − 0.277·13-s − 1.51·15-s + 2.46·16-s + 1.17·17-s − 2.37·18-s + 0.229·19-s − 2.42·20-s + 3.13·22-s − 0.625·23-s − 3.99·24-s + 0.513·26-s + 0.430·27-s − 1.04·29-s + 2.79·30-s + 0.153·31-s − 1.91·32-s − 2.56·33-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 931 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 931 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(931\)    =    \(7^{2} \cdot 19\)
Sign: $-1$
Analytic conductor: \(7.43407\)
Root analytic conductor: \(2.72654\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 931,\ (\ :1/2),\ -1)\)

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 \( 1 \)
19 \( 1 - T \)
good2 \( 1 + 2.61T + 2T^{2} \)
3 \( 1 - 2.61T + 3T^{2} \)
5 \( 1 + 2.23T + 5T^{2} \)
11 \( 1 + 5.61T + 11T^{2} \)
13 \( 1 + T + 13T^{2} \)
17 \( 1 - 4.85T + 17T^{2} \)
23 \( 1 + 3T + 23T^{2} \)
29 \( 1 + 5.61T + 29T^{2} \)
31 \( 1 - 0.854T + 31T^{2} \)
37 \( 1 + 10.7T + 37T^{2} \)
41 \( 1 + 0.381T + 41T^{2} \)
43 \( 1 + 2T + 43T^{2} \)
47 \( 1 + 11.1T + 47T^{2} \)
53 \( 1 - 1.09T + 53T^{2} \)
59 \( 1 + 0.708T + 59T^{2} \)
61 \( 1 - 6.70T + 61T^{2} \)
67 \( 1 - 6.56T + 67T^{2} \)
71 \( 1 - 7.47T + 71T^{2} \)
73 \( 1 + 4.14T + 73T^{2} \)
79 \( 1 + 10T + 79T^{2} \)
83 \( 1 - 7.85T + 83T^{2} \)
89 \( 1 + 2.29T + 89T^{2} \)
97 \( 1 + 14.4T + 97T^{2} \)
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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

−9.651949754751308661009286418549, −8.546380789600828505643287060300, −8.077397576478401044647518747403, −7.68968138680611923618704581109, −7.01714245933988477690687945189, −5.40171319723633680018681200062, −3.62922633705583399334905222360, −2.84310425131241536948304330437, −1.83012812850839445151614616167, 0, 1.83012812850839445151614616167, 2.84310425131241536948304330437, 3.62922633705583399334905222360, 5.40171319723633680018681200062, 7.01714245933988477690687945189, 7.68968138680611923618704581109, 8.077397576478401044647518747403, 8.546380789600828505643287060300, 9.651949754751308661009286418549

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