Properties

Label 2-155-155.154-c0-0-1
Degree $2$
Conductor $155$
Sign $1$
Analytic cond. $0.0773550$
Root an. cond. $0.278127$
Motivic weight $0$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 4-s − 5-s − 9-s + 16-s − 2·19-s − 20-s + 25-s − 31-s − 36-s + 2·41-s + 45-s + 49-s + 2·59-s + 64-s − 2·71-s − 2·76-s − 80-s + 81-s + 2·95-s + 100-s − 2·101-s − 2·109-s + ⋯
L(s)  = 1  + 4-s − 5-s − 9-s + 16-s − 2·19-s − 20-s + 25-s − 31-s − 36-s + 2·41-s + 45-s + 49-s + 2·59-s + 64-s − 2·71-s − 2·76-s − 80-s + 81-s + 2·95-s + 100-s − 2·101-s − 2·109-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 155 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 155 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(155\)    =    \(5 \cdot 31\)
Sign: $1$
Analytic conductor: \(0.0773550\)
Root analytic conductor: \(0.278127\)
Motivic weight: \(0\)
Rational: yes
Arithmetic: yes
Character: $\chi_{155} (154, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 155,\ (\ :0),\ 1)\)

Particular Values

\(L(\frac{1}{2})\) \(\approx\) \(0.6508459289\)
\(L(\frac12)\) \(\approx\) \(0.6508459289\)
\(L(1)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad5 \( 1 + T \)
31 \( 1 + T \)
good2 \( ( 1 - T )( 1 + T ) \)
3 \( 1 + T^{2} \)
7 \( ( 1 - T )( 1 + T ) \)
11 \( ( 1 - T )( 1 + T ) \)
13 \( 1 + T^{2} \)
17 \( 1 + T^{2} \)
19 \( ( 1 + T )^{2} \)
23 \( 1 + T^{2} \)
29 \( ( 1 - T )( 1 + T ) \)
37 \( 1 + T^{2} \)
41 \( ( 1 - T )^{2} \)
43 \( 1 + T^{2} \)
47 \( ( 1 - T )( 1 + T ) \)
53 \( 1 + T^{2} \)
59 \( ( 1 - T )^{2} \)
61 \( ( 1 - T )( 1 + T ) \)
67 \( ( 1 - T )( 1 + T ) \)
71 \( ( 1 + T )^{2} \)
73 \( 1 + T^{2} \)
79 \( ( 1 - T )( 1 + T ) \)
83 \( 1 + T^{2} \)
89 \( ( 1 - T )( 1 + T ) \)
97 \( ( 1 - T )( 1 + T ) \)
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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

−12.92233217732296332972071056813, −12.06447657650733376192840104955, −11.17908071778950014910667656018, −10.60304083766435038603704405493, −8.861280814833111961532676385837, −7.954415932045116536338012755008, −6.88311713143119363974484421210, −5.75592926400217348902935065499, −4.01598014445173499465398203594, −2.56526779280730246524432404194, 2.56526779280730246524432404194, 4.01598014445173499465398203594, 5.75592926400217348902935065499, 6.88311713143119363974484421210, 7.954415932045116536338012755008, 8.861280814833111961532676385837, 10.60304083766435038603704405493, 11.17908071778950014910667656018, 12.06447657650733376192840104955, 12.92233217732296332972071056813

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