Properties

Label 2-644-1.1-c1-0-2
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  − 2.11·3-s + 1.77·5-s − 7-s + 1.45·9-s + 0.612·11-s + 1.84·13-s − 3.75·15-s + 4.26·17-s − 4.70·19-s + 2.11·21-s − 23-s − 1.83·25-s + 3.25·27-s + 10.2·29-s + 10.2·31-s − 1.29·33-s − 1.77·35-s − 2.47·37-s − 3.90·39-s + 6.37·41-s + 10.9·43-s + 2.59·45-s + 0.544·47-s + 49-s − 9.00·51-s − 7.61·53-s + 1.09·55-s + ⋯
L(s)  = 1  − 1.21·3-s + 0.795·5-s − 0.377·7-s + 0.486·9-s + 0.184·11-s + 0.512·13-s − 0.969·15-s + 1.03·17-s − 1.07·19-s + 0.460·21-s − 0.208·23-s − 0.367·25-s + 0.625·27-s + 1.90·29-s + 1.83·31-s − 0.225·33-s − 0.300·35-s − 0.407·37-s − 0.624·39-s + 0.995·41-s + 1.66·43-s + 0.387·45-s + 0.0794·47-s + 0.142·49-s − 1.26·51-s − 1.04·53-s + 0.147·55-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

\(L(1)\) \(\approx\) \(1.093314590\)
\(L(\frac12)\) \(\approx\) \(1.093314590\)
\(L(\frac{3}{2})\) 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 \( 1 + 2.11T + 3T^{2} \)
5 \( 1 - 1.77T + 5T^{2} \)
11 \( 1 - 0.612T + 11T^{2} \)
13 \( 1 - 1.84T + 13T^{2} \)
17 \( 1 - 4.26T + 17T^{2} \)
19 \( 1 + 4.70T + 19T^{2} \)
29 \( 1 - 10.2T + 29T^{2} \)
31 \( 1 - 10.2T + 31T^{2} \)
37 \( 1 + 2.47T + 37T^{2} \)
41 \( 1 - 6.37T + 41T^{2} \)
43 \( 1 - 10.9T + 43T^{2} \)
47 \( 1 - 0.544T + 47T^{2} \)
53 \( 1 + 7.61T + 53T^{2} \)
59 \( 1 + 2.74T + 59T^{2} \)
61 \( 1 - 15.1T + 61T^{2} \)
67 \( 1 + 5.27T + 67T^{2} \)
71 \( 1 + 2.21T + 71T^{2} \)
73 \( 1 - 5.62T + 73T^{2} \)
79 \( 1 + 2.46T + 79T^{2} \)
83 \( 1 - 5.84T + 83T^{2} \)
89 \( 1 - 0.00746T + 89T^{2} \)
97 \( 1 + 7.58T + 97T^{2} \)
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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

−10.42887319299569093144908188912, −10.05424098071921848026707816498, −8.934078314862118381011105495846, −7.927977123033342820723553035922, −6.44392132234959473058426412852, −6.23627460997414417135387966788, −5.28430117269705697168936253973, −4.21252806272591130336908690675, −2.67281038292489146725014239221, −0.993744029390338225978274947159, 0.993744029390338225978274947159, 2.67281038292489146725014239221, 4.21252806272591130336908690675, 5.28430117269705697168936253973, 6.23627460997414417135387966788, 6.44392132234959473058426412852, 7.927977123033342820723553035922, 8.934078314862118381011105495846, 10.05424098071921848026707816498, 10.42887319299569093144908188912

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