Properties

Label 2-931-1.1-c1-0-14
Degree $2$
Conductor $931$
Sign $1$
Analytic cond. $7.43407$
Root an. cond. $2.72654$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2·2-s − 2·3-s + 2·4-s − 3·5-s − 4·6-s + 9-s − 6·10-s + 4·11-s − 4·12-s + 6·13-s + 6·15-s − 4·16-s + 7·17-s + 2·18-s − 19-s − 6·20-s + 8·22-s + 3·23-s + 4·25-s + 12·26-s + 4·27-s + 12·30-s − 8·32-s − 8·33-s + 14·34-s + 2·36-s − 2·37-s + ⋯
L(s)  = 1  + 1.41·2-s − 1.15·3-s + 4-s − 1.34·5-s − 1.63·6-s + 1/3·9-s − 1.89·10-s + 1.20·11-s − 1.15·12-s + 1.66·13-s + 1.54·15-s − 16-s + 1.69·17-s + 0.471·18-s − 0.229·19-s − 1.34·20-s + 1.70·22-s + 0.625·23-s + 4/5·25-s + 2.35·26-s + 0.769·27-s + 2.19·30-s − 1.41·32-s − 1.39·33-s + 2.40·34-s + 1/3·36-s − 0.328·37-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: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 931,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.875793980\)
\(L(\frac12)\) \(\approx\) \(1.875793980\)
\(L(\frac{3}{2})\) 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 \( 1 - p T + p T^{2} \)
3 \( 1 + 2 T + p T^{2} \)
5 \( 1 + 3 T + p T^{2} \)
11 \( 1 - 4 T + p T^{2} \)
13 \( 1 - 6 T + p T^{2} \)
17 \( 1 - 7 T + p T^{2} \)
23 \( 1 - 3 T + p T^{2} \)
29 \( 1 + p T^{2} \)
31 \( 1 + p T^{2} \)
37 \( 1 + 2 T + p T^{2} \)
41 \( 1 - 4 T + p T^{2} \)
43 \( 1 - 5 T + p T^{2} \)
47 \( 1 + 4 T + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 + 8 T + p T^{2} \)
61 \( 1 - 2 T + p T^{2} \)
67 \( 1 - 8 T + p T^{2} \)
71 \( 1 + 2 T + p T^{2} \)
73 \( 1 + 10 T + p T^{2} \)
79 \( 1 - 12 T + p T^{2} \)
83 \( 1 - 3 T + p T^{2} \)
89 \( 1 - 8 T + p T^{2} \)
97 \( 1 + 4 T + p T^{2} \)
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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

−10.64416687445000343603953164841, −9.169422038731926349646733763033, −8.257216412779562315668451423776, −7.13470928968254736566438211223, −6.25883493919142594991046086243, −5.71582158035303955673922475384, −4.70997962935936595905677293224, −3.83386548839045730562065401010, −3.32672471138068793751574139576, −0.979388952363395344123223860435, 0.979388952363395344123223860435, 3.32672471138068793751574139576, 3.83386548839045730562065401010, 4.70997962935936595905677293224, 5.71582158035303955673922475384, 6.25883493919142594991046086243, 7.13470928968254736566438211223, 8.257216412779562315668451423776, 9.169422038731926349646733763033, 10.64416687445000343603953164841

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