Properties

Label 2-644-1.1-c1-0-1
Degree $2$
Conductor $644$
Sign $1$
Analytic cond. $5.14236$
Root an. cond. $2.26767$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 0.604·3-s − 3.83·5-s + 7-s − 2.63·9-s + 5.52·11-s + 0.106·13-s + 2.31·15-s − 0.497·17-s + 1.82·19-s − 0.604·21-s + 23-s + 9.73·25-s + 3.40·27-s + 7.25·29-s + 3.94·31-s − 3.34·33-s − 3.83·35-s + 5.37·37-s − 0.0642·39-s + 5.10·41-s + 2.40·43-s + 10.1·45-s − 8.35·47-s + 49-s + 0.300·51-s − 8.25·53-s − 21.2·55-s + ⋯
L(s)  = 1  − 0.348·3-s − 1.71·5-s + 0.377·7-s − 0.878·9-s + 1.66·11-s + 0.0294·13-s + 0.598·15-s − 0.120·17-s + 0.419·19-s − 0.131·21-s + 0.208·23-s + 1.94·25-s + 0.655·27-s + 1.34·29-s + 0.708·31-s − 0.581·33-s − 0.648·35-s + 0.884·37-s − 0.0102·39-s + 0.796·41-s + 0.367·43-s + 1.50·45-s − 1.21·47-s + 0.142·49-s + 0.0421·51-s − 1.13·53-s − 2.86·55-s + ⋯

Functional equation

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

Invariants

Degree: \(2\)
Conductor: \(644\)    =    \(2^{2} \cdot 7 \cdot 23\)
Sign: $1$
Analytic conductor: \(5.14236\)
Root analytic conductor: \(2.26767\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 644,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.9892188611\)
\(L(\frac12)\) \(\approx\) \(0.9892188611\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
7 \( 1 - T \)
23 \( 1 - T \)
good3 \( 1 + 0.604T + 3T^{2} \)
5 \( 1 + 3.83T + 5T^{2} \)
11 \( 1 - 5.52T + 11T^{2} \)
13 \( 1 - 0.106T + 13T^{2} \)
17 \( 1 + 0.497T + 17T^{2} \)
19 \( 1 - 1.82T + 19T^{2} \)
29 \( 1 - 7.25T + 29T^{2} \)
31 \( 1 - 3.94T + 31T^{2} \)
37 \( 1 - 5.37T + 37T^{2} \)
41 \( 1 - 5.10T + 41T^{2} \)
43 \( 1 - 2.40T + 43T^{2} \)
47 \( 1 + 8.35T + 47T^{2} \)
53 \( 1 + 8.25T + 53T^{2} \)
59 \( 1 - 0.668T + 59T^{2} \)
61 \( 1 - 3.21T + 61T^{2} \)
67 \( 1 - 11.1T + 67T^{2} \)
71 \( 1 + 0.897T + 71T^{2} \)
73 \( 1 - 10.5T + 73T^{2} \)
79 \( 1 + 2.77T + 79T^{2} \)
83 \( 1 + 14.4T + 83T^{2} \)
89 \( 1 + 16.9T + 89T^{2} \)
97 \( 1 - 12.2T + 97T^{2} \)
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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

−11.01275872144416945096840726345, −9.621121405795724559698332200831, −8.587933493752205253635954921494, −8.086692866449558084304282644422, −7.01080017760588942468651425387, −6.21345520013373392514239248476, −4.82713631504885421256949753974, −4.05381173462149372591988548171, −3.03189296623008967128935039623, −0.894531937057956758755581108434, 0.894531937057956758755581108434, 3.03189296623008967128935039623, 4.05381173462149372591988548171, 4.82713631504885421256949753974, 6.21345520013373392514239248476, 7.01080017760588942468651425387, 8.086692866449558084304282644422, 8.587933493752205253635954921494, 9.621121405795724559698332200831, 11.01275872144416945096840726345

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