Properties

Label 2-931-1.1-c1-0-20
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  − 0.618·2-s − 2.61·3-s − 1.61·4-s − 5-s + 1.61·6-s + 2.23·8-s + 3.85·9-s + 0.618·10-s − 1.61·11-s + 4.23·12-s + 13-s + 2.61·15-s + 1.85·16-s + 2.85·17-s − 2.38·18-s + 19-s + 1.61·20-s + 1.00·22-s + 3.47·23-s − 5.85·24-s − 4·25-s − 0.618·26-s − 2.23·27-s + 3.61·29-s − 1.61·30-s + 10.5·31-s − 5.61·32-s + ⋯
L(s)  = 1  − 0.437·2-s − 1.51·3-s − 0.809·4-s − 0.447·5-s + 0.660·6-s + 0.790·8-s + 1.28·9-s + 0.195·10-s − 0.487·11-s + 1.22·12-s + 0.277·13-s + 0.675·15-s + 0.463·16-s + 0.692·17-s − 0.561·18-s + 0.229·19-s + 0.361·20-s + 0.213·22-s + 0.723·23-s − 1.19·24-s − 0.800·25-s − 0.121·26-s − 0.430·27-s + 0.671·29-s − 0.295·30-s + 1.89·31-s − 0.993·32-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 \( 1 + 0.618T + 2T^{2} \)
3 \( 1 + 2.61T + 3T^{2} \)
5 \( 1 + T + 5T^{2} \)
11 \( 1 + 1.61T + 11T^{2} \)
13 \( 1 - T + 13T^{2} \)
17 \( 1 - 2.85T + 17T^{2} \)
23 \( 1 - 3.47T + 23T^{2} \)
29 \( 1 - 3.61T + 29T^{2} \)
31 \( 1 - 10.5T + 31T^{2} \)
37 \( 1 + 11.4T + 37T^{2} \)
41 \( 1 + 10.0T + 41T^{2} \)
43 \( 1 + 0.472T + 43T^{2} \)
47 \( 1 - 1.47T + 47T^{2} \)
53 \( 1 + 1.85T + 53T^{2} \)
59 \( 1 + 12.2T + 59T^{2} \)
61 \( 1 + 5.94T + 61T^{2} \)
67 \( 1 - 13.3T + 67T^{2} \)
71 \( 1 + 4.70T + 71T^{2} \)
73 \( 1 + 4.32T + 73T^{2} \)
79 \( 1 - 4.47T + 79T^{2} \)
83 \( 1 + 9.85T + 83T^{2} \)
89 \( 1 + 7.23T + 89T^{2} \)
97 \( 1 - 1.47T + 97T^{2} \)
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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

−10.01743829146338455472767099287, −8.764520872120321610601875903152, −8.017137261804027839550424637821, −7.09442558566743820221018968445, −6.10160260701595760390970412024, −5.15637072280566123317405722388, −4.63324355249392021220879636521, −3.38663266594417518382502288044, −1.21307867701677248734773070883, 0, 1.21307867701677248734773070883, 3.38663266594417518382502288044, 4.63324355249392021220879636521, 5.15637072280566123317405722388, 6.10160260701595760390970412024, 7.09442558566743820221018968445, 8.017137261804027839550424637821, 8.764520872120321610601875903152, 10.01743829146338455472767099287

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