Properties

Label 2-931-1.1-c1-0-56
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  + 2.27·2-s − 1.88·3-s + 3.16·4-s − 1.72·5-s − 4.29·6-s + 2.65·8-s + 0.569·9-s − 3.91·10-s − 2.87·11-s − 5.98·12-s + 1.56·13-s + 3.25·15-s − 0.308·16-s − 5.43·17-s + 1.29·18-s − 19-s − 5.45·20-s − 6.52·22-s − 6.09·23-s − 5.00·24-s − 2.03·25-s + 3.55·26-s + 4.59·27-s + 3.17·29-s + 7.39·30-s + 1.03·31-s − 6.00·32-s + ⋯
L(s)  = 1  + 1.60·2-s − 1.09·3-s + 1.58·4-s − 0.770·5-s − 1.75·6-s + 0.937·8-s + 0.189·9-s − 1.23·10-s − 0.865·11-s − 1.72·12-s + 0.434·13-s + 0.840·15-s − 0.0770·16-s − 1.31·17-s + 0.304·18-s − 0.229·19-s − 1.21·20-s − 1.39·22-s − 1.27·23-s − 1.02·24-s − 0.406·25-s + 0.697·26-s + 0.883·27-s + 0.589·29-s + 1.35·30-s + 0.185·31-s − 1.06·32-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 \( 1 - 2.27T + 2T^{2} \)
3 \( 1 + 1.88T + 3T^{2} \)
5 \( 1 + 1.72T + 5T^{2} \)
11 \( 1 + 2.87T + 11T^{2} \)
13 \( 1 - 1.56T + 13T^{2} \)
17 \( 1 + 5.43T + 17T^{2} \)
23 \( 1 + 6.09T + 23T^{2} \)
29 \( 1 - 3.17T + 29T^{2} \)
31 \( 1 - 1.03T + 31T^{2} \)
37 \( 1 - 8.44T + 37T^{2} \)
41 \( 1 + 10.4T + 41T^{2} \)
43 \( 1 + 3.21T + 43T^{2} \)
47 \( 1 - 5.50T + 47T^{2} \)
53 \( 1 + 12.9T + 53T^{2} \)
59 \( 1 - 6.21T + 59T^{2} \)
61 \( 1 + 9.76T + 61T^{2} \)
67 \( 1 + 2.55T + 67T^{2} \)
71 \( 1 - 12.3T + 71T^{2} \)
73 \( 1 - 10.5T + 73T^{2} \)
79 \( 1 - 12.9T + 79T^{2} \)
83 \( 1 + 5.38T + 83T^{2} \)
89 \( 1 + 7.45T + 89T^{2} \)
97 \( 1 - 2.45T + 97T^{2} \)
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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

−10.07174168123963278512855529767, −8.599007839886486993246920290641, −7.69701256879927924373164320133, −6.49907646690959841045151006439, −6.12280780078246932302432803257, −5.07782777662885165133258180276, −4.49039532151005234334754235431, −3.55469700204639438742919458563, −2.33010621702502294628402567669, 0, 2.33010621702502294628402567669, 3.55469700204639438742919458563, 4.49039532151005234334754235431, 5.07782777662885165133258180276, 6.12280780078246932302432803257, 6.49907646690959841045151006439, 7.69701256879927924373164320133, 8.599007839886486993246920290641, 10.07174168123963278512855529767

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