Properties

Label 2-56-1.1-c3-0-1
Degree $2$
Conductor $56$
Sign $1$
Analytic cond. $3.30410$
Root an. cond. $1.81772$
Motivic weight $3$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 6·3-s + 8·5-s − 7·7-s + 9·9-s + 56·11-s − 28·13-s + 48·15-s − 90·17-s + 74·19-s − 42·21-s − 96·23-s − 61·25-s − 108·27-s − 222·29-s − 100·31-s + 336·33-s − 56·35-s + 58·37-s − 168·39-s + 422·41-s + 512·43-s + 72·45-s + 148·47-s + 49·49-s − 540·51-s − 642·53-s + 448·55-s + ⋯
L(s)  = 1  + 1.15·3-s + 0.715·5-s − 0.377·7-s + 1/3·9-s + 1.53·11-s − 0.597·13-s + 0.826·15-s − 1.28·17-s + 0.893·19-s − 0.436·21-s − 0.870·23-s − 0.487·25-s − 0.769·27-s − 1.42·29-s − 0.579·31-s + 1.77·33-s − 0.270·35-s + 0.257·37-s − 0.689·39-s + 1.60·41-s + 1.81·43-s + 0.238·45-s + 0.459·47-s + 1/7·49-s − 1.48·51-s − 1.66·53-s + 1.09·55-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 56 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 56 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(56\)    =    \(2^{3} \cdot 7\)
Sign: $1$
Analytic conductor: \(3.30410\)
Root analytic conductor: \(1.81772\)
Motivic weight: \(3\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 56,\ (\ :3/2),\ 1)\)

Particular Values

\(L(2)\) \(\approx\) \(2.013227789\)
\(L(\frac12)\) \(\approx\) \(2.013227789\)
\(L(\frac{5}{2})\) 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 \( 1 + p T \)
good3 \( 1 - 2 p T + p^{3} T^{2} \)
5 \( 1 - 8 T + p^{3} T^{2} \)
11 \( 1 - 56 T + p^{3} T^{2} \)
13 \( 1 + 28 T + p^{3} T^{2} \)
17 \( 1 + 90 T + p^{3} T^{2} \)
19 \( 1 - 74 T + p^{3} T^{2} \)
23 \( 1 + 96 T + p^{3} T^{2} \)
29 \( 1 + 222 T + p^{3} T^{2} \)
31 \( 1 + 100 T + p^{3} T^{2} \)
37 \( 1 - 58 T + p^{3} T^{2} \)
41 \( 1 - 422 T + p^{3} T^{2} \)
43 \( 1 - 512 T + p^{3} T^{2} \)
47 \( 1 - 148 T + p^{3} T^{2} \)
53 \( 1 + 642 T + p^{3} T^{2} \)
59 \( 1 + 318 T + p^{3} T^{2} \)
61 \( 1 - 720 T + p^{3} T^{2} \)
67 \( 1 + 412 T + p^{3} T^{2} \)
71 \( 1 - 448 T + p^{3} T^{2} \)
73 \( 1 - 994 T + p^{3} T^{2} \)
79 \( 1 + 296 T + p^{3} T^{2} \)
83 \( 1 - 386 T + p^{3} T^{2} \)
89 \( 1 + 6 T + p^{3} T^{2} \)
97 \( 1 + 138 T + p^{3} T^{2} \)
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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

−14.42490932397970822854253744862, −13.94540155099789204265027137159, −12.76730423850578329433656751386, −11.32922960889032191166477063688, −9.492464754369934725311024839254, −9.185429752254765877102764611050, −7.53102564612712724747366180675, −6.05529226935475292475886002197, −3.89173908277123523252019440345, −2.17798397659288933598236518951, 2.17798397659288933598236518951, 3.89173908277123523252019440345, 6.05529226935475292475886002197, 7.53102564612712724747366180675, 9.185429752254765877102764611050, 9.492464754369934725311024839254, 11.32922960889032191166477063688, 12.76730423850578329433656751386, 13.94540155099789204265027137159, 14.42490932397970822854253744862

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