Properties

Label 2-155-1.1-c1-0-4
Degree $2$
Conductor $155$
Sign $1$
Analytic cond. $1.23768$
Root an. cond. $1.11251$
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-s + 2·3-s − 4-s − 5-s − 2·6-s + 4·7-s + 3·8-s + 9-s + 10-s + 4·11-s − 2·12-s − 4·14-s − 2·15-s − 16-s − 8·17-s − 18-s + 4·19-s + 20-s + 8·21-s − 4·22-s + 2·23-s + 6·24-s + 25-s − 4·27-s − 4·28-s − 6·29-s + 2·30-s + ⋯
L(s)  = 1  − 0.707·2-s + 1.15·3-s − 1/2·4-s − 0.447·5-s − 0.816·6-s + 1.51·7-s + 1.06·8-s + 1/3·9-s + 0.316·10-s + 1.20·11-s − 0.577·12-s − 1.06·14-s − 0.516·15-s − 1/4·16-s − 1.94·17-s − 0.235·18-s + 0.917·19-s + 0.223·20-s + 1.74·21-s − 0.852·22-s + 0.417·23-s + 1.22·24-s + 1/5·25-s − 0.769·27-s − 0.755·28-s − 1.11·29-s + 0.365·30-s + ⋯

Functional equation

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

Invariants

Degree: \(2\)
Conductor: \(155\)    =    \(5 \cdot 31\)
Sign: $1$
Analytic conductor: \(1.23768\)
Root analytic conductor: \(1.11251\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 155,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.057069688\)
\(L(\frac12)\) \(\approx\) \(1.057069688\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad5 \( 1 + T \)
31 \( 1 - T \)
good2 \( 1 + T + p T^{2} \)
3 \( 1 - 2 T + p T^{2} \)
7 \( 1 - 4 T + p T^{2} \)
11 \( 1 - 4 T + p T^{2} \)
13 \( 1 + p T^{2} \)
17 \( 1 + 8 T + p T^{2} \)
19 \( 1 - 4 T + p T^{2} \)
23 \( 1 - 2 T + p T^{2} \)
29 \( 1 + 6 T + p T^{2} \)
37 \( 1 + 4 T + p T^{2} \)
41 \( 1 + 6 T + p T^{2} \)
43 \( 1 + 6 T + p T^{2} \)
47 \( 1 - 8 T + p T^{2} \)
53 \( 1 + 12 T + p T^{2} \)
59 \( 1 + 4 T + p T^{2} \)
61 \( 1 - 10 T + p T^{2} \)
67 \( 1 - 8 T + p T^{2} \)
71 \( 1 + p T^{2} \)
73 \( 1 + 4 T + p T^{2} \)
79 \( 1 + p T^{2} \)
83 \( 1 - 2 T + p T^{2} \)
89 \( 1 - 14 T + p T^{2} \)
97 \( 1 + 18 T + p T^{2} \)
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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

−13.29030496383911904269281815554, −11.67404196451839618122260474934, −10.95042563470151669189144154002, −9.406906855544247656461754170978, −8.774417290846673446056763114030, −8.125055688796012797619570937515, −7.12181256175802188916168498633, −4.89232440280039987399206936754, −3.83108286299930817257651347819, −1.76743844147568883236115154570, 1.76743844147568883236115154570, 3.83108286299930817257651347819, 4.89232440280039987399206936754, 7.12181256175802188916168498633, 8.125055688796012797619570937515, 8.774417290846673446056763114030, 9.406906855544247656461754170978, 10.95042563470151669189144154002, 11.67404196451839618122260474934, 13.29030496383911904269281815554

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