Properties

Label 2-931-1.1-c1-0-31
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  − 1.92·2-s − 1.52·3-s + 1.68·4-s + 2.00·5-s + 2.92·6-s + 0.600·8-s − 0.687·9-s − 3.85·10-s − 0.645·11-s − 2.56·12-s + 0.232·13-s − 3.05·15-s − 4.52·16-s − 5.71·17-s + 1.31·18-s + 19-s + 3.38·20-s + 1.23·22-s + 4.21·23-s − 0.913·24-s − 0.972·25-s − 0.447·26-s + 5.60·27-s + 3.65·29-s + 5.86·30-s − 1.75·31-s + 7.49·32-s + ⋯
L(s)  = 1  − 1.35·2-s − 0.878·3-s + 0.843·4-s + 0.897·5-s + 1.19·6-s + 0.212·8-s − 0.229·9-s − 1.21·10-s − 0.194·11-s − 0.740·12-s + 0.0646·13-s − 0.788·15-s − 1.13·16-s − 1.38·17-s + 0.311·18-s + 0.229·19-s + 0.757·20-s + 0.264·22-s + 0.878·23-s − 0.186·24-s − 0.194·25-s − 0.0877·26-s + 1.07·27-s + 0.678·29-s + 1.07·30-s − 0.314·31-s + 1.32·32-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 \( 1 + 1.92T + 2T^{2} \)
3 \( 1 + 1.52T + 3T^{2} \)
5 \( 1 - 2.00T + 5T^{2} \)
11 \( 1 + 0.645T + 11T^{2} \)
13 \( 1 - 0.232T + 13T^{2} \)
17 \( 1 + 5.71T + 17T^{2} \)
23 \( 1 - 4.21T + 23T^{2} \)
29 \( 1 - 3.65T + 29T^{2} \)
31 \( 1 + 1.75T + 31T^{2} \)
37 \( 1 - 3.06T + 37T^{2} \)
41 \( 1 + 6.88T + 41T^{2} \)
43 \( 1 - 3.13T + 43T^{2} \)
47 \( 1 + 12.5T + 47T^{2} \)
53 \( 1 + 0.719T + 53T^{2} \)
59 \( 1 - 3.78T + 59T^{2} \)
61 \( 1 + 3.12T + 61T^{2} \)
67 \( 1 - 3.07T + 67T^{2} \)
71 \( 1 + 6.14T + 71T^{2} \)
73 \( 1 - 3.95T + 73T^{2} \)
79 \( 1 + 14.1T + 79T^{2} \)
83 \( 1 + 15.6T + 83T^{2} \)
89 \( 1 + 8.41T + 89T^{2} \)
97 \( 1 + 15.7T + 97T^{2} \)
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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

−9.697927654430501412193449082839, −8.881876488927183367939008219287, −8.255430020992161930967443084657, −7.03633506883401892268289001092, −6.42098413926405987069158262163, −5.43998987626038185149871214685, −4.54806779377791491123333340016, −2.67831388088800604475959051223, −1.46251543087154178460223882498, 0, 1.46251543087154178460223882498, 2.67831388088800604475959051223, 4.54806779377791491123333340016, 5.43998987626038185149871214685, 6.42098413926405987069158262163, 7.03633506883401892268289001092, 8.255430020992161930967443084657, 8.881876488927183367939008219287, 9.697927654430501412193449082839

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