Properties

Label 2-931-1.1-c1-0-21
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  − 2.41·2-s − 1.41·3-s + 3.82·4-s − 5-s + 3.41·6-s − 4.41·8-s − 0.999·9-s + 2.41·10-s − 0.414·11-s − 5.41·12-s + 2.24·13-s + 1.41·15-s + 2.99·16-s + 4·17-s + 2.41·18-s + 19-s − 3.82·20-s + 0.999·22-s − 5.58·23-s + 6.24·24-s − 4·25-s − 5.41·26-s + 5.65·27-s − 6.58·29-s − 3.41·30-s + 6.24·31-s + 1.58·32-s + ⋯
L(s)  = 1  − 1.70·2-s − 0.816·3-s + 1.91·4-s − 0.447·5-s + 1.39·6-s − 1.56·8-s − 0.333·9-s + 0.763·10-s − 0.124·11-s − 1.56·12-s + 0.621·13-s + 0.365·15-s + 0.749·16-s + 0.970·17-s + 0.569·18-s + 0.229·19-s − 0.856·20-s + 0.213·22-s − 1.16·23-s + 1.27·24-s − 0.800·25-s − 1.06·26-s + 1.08·27-s − 1.22·29-s − 0.623·30-s + 1.12·31-s + 0.280·32-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 \( 1 + 2.41T + 2T^{2} \)
3 \( 1 + 1.41T + 3T^{2} \)
5 \( 1 + T + 5T^{2} \)
11 \( 1 + 0.414T + 11T^{2} \)
13 \( 1 - 2.24T + 13T^{2} \)
17 \( 1 - 4T + 17T^{2} \)
23 \( 1 + 5.58T + 23T^{2} \)
29 \( 1 + 6.58T + 29T^{2} \)
31 \( 1 - 6.24T + 31T^{2} \)
37 \( 1 - 9.07T + 37T^{2} \)
41 \( 1 - 3.17T + 41T^{2} \)
43 \( 1 - 8.07T + 43T^{2} \)
47 \( 1 - 4.41T + 47T^{2} \)
53 \( 1 + 4.24T + 53T^{2} \)
59 \( 1 + 6.82T + 59T^{2} \)
61 \( 1 + 11.8T + 61T^{2} \)
67 \( 1 - 1.17T + 67T^{2} \)
71 \( 1 + 14.2T + 71T^{2} \)
73 \( 1 + 15.1T + 73T^{2} \)
79 \( 1 - 1.41T + 79T^{2} \)
83 \( 1 + 9.24T + 83T^{2} \)
89 \( 1 - 11.4T + 89T^{2} \)
97 \( 1 - 3.17T + 97T^{2} \)
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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

−9.649991460305478844889466590864, −8.870586216008926033723286917269, −7.85186497480448389605282031249, −7.60299193635488082667835967006, −6.22386994358679646986569899923, −5.78492217918501612923183694794, −4.22845934241711325114532319210, −2.77972255815101624202455845532, −1.27161165506950327159448767675, 0, 1.27161165506950327159448767675, 2.77972255815101624202455845532, 4.22845934241711325114532319210, 5.78492217918501612923183694794, 6.22386994358679646986569899923, 7.60299193635488082667835967006, 7.85186497480448389605282031249, 8.870586216008926033723286917269, 9.649991460305478844889466590864

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