Properties

Label 2-644-644.643-c0-0-3
Degree $2$
Conductor $644$
Sign $1$
Analytic cond. $0.321397$
Root an. cond. $0.566919$
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  + 2-s + 4-s − 7-s + 8-s − 9-s + 2·11-s − 14-s + 16-s − 18-s + 2·22-s − 23-s − 25-s − 28-s − 2·29-s + 32-s − 36-s − 2·43-s + 2·44-s − 46-s + 49-s − 50-s − 56-s − 2·58-s + 63-s + 64-s + 2·67-s − 72-s + ⋯
L(s)  = 1  + 2-s + 4-s − 7-s + 8-s − 9-s + 2·11-s − 14-s + 16-s − 18-s + 2·22-s − 23-s − 25-s − 28-s − 2·29-s + 32-s − 36-s − 2·43-s + 2·44-s − 46-s + 49-s − 50-s − 56-s − 2·58-s + 63-s + 64-s + 2·67-s − 72-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 644 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 644 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(644\)    =    \(2^{2} \cdot 7 \cdot 23\)
Sign: $1$
Analytic conductor: \(0.321397\)
Root analytic conductor: \(0.566919\)
Motivic weight: \(0\)
Rational: yes
Arithmetic: yes
Character: $\chi_{644} (643, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 644,\ (\ :0),\ 1)\)

Particular Values

\(L(\frac{1}{2})\) \(\approx\) \(1.557404813\)
\(L(\frac12)\) \(\approx\) \(1.557404813\)
\(L(1)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - T \)
7 \( 1 + T \)
23 \( 1 + T \)
good3 \( 1 + T^{2} \)
5 \( 1 + T^{2} \)
11 \( ( 1 - T )^{2} \)
13 \( ( 1 - T )( 1 + T ) \)
17 \( 1 + T^{2} \)
19 \( ( 1 - T )( 1 + T ) \)
29 \( ( 1 + T )^{2} \)
31 \( 1 + T^{2} \)
37 \( ( 1 - T )( 1 + T ) \)
41 \( ( 1 - T )( 1 + T ) \)
43 \( ( 1 + T )^{2} \)
47 \( 1 + T^{2} \)
53 \( ( 1 - T )( 1 + T ) \)
59 \( 1 + T^{2} \)
61 \( 1 + T^{2} \)
67 \( ( 1 - T )^{2} \)
71 \( ( 1 - T )( 1 + T ) \)
73 \( ( 1 - T )( 1 + T ) \)
79 \( ( 1 - T )^{2} \)
83 \( ( 1 - T )( 1 + T ) \)
89 \( 1 + T^{2} \)
97 \( 1 + T^{2} \)
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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

−11.14478443925547576013609649673, −9.878191527030714263891319301318, −9.203490893724311193910410343899, −8.030617649835787760899180467467, −6.82428609521709537247907988016, −6.24032611945626527976617693619, −5.45733683174825137938095995949, −3.93468807116862272213773832284, −3.47086049052007197481262615160, −1.98310995698250958628581129572, 1.98310995698250958628581129572, 3.47086049052007197481262615160, 3.93468807116862272213773832284, 5.45733683174825137938095995949, 6.24032611945626527976617693619, 6.82428609521709537247907988016, 8.030617649835787760899180467467, 9.203490893724311193910410343899, 9.878191527030714263891319301318, 11.14478443925547576013609649673

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