Properties

Label 4-15680-1.1-c1e2-0-4
Degree $4$
Conductor $15680$
Sign $-1$
Analytic cond. $0.999770$
Root an. cond. $0.999942$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2-s − 4-s − 2·5-s − 3·7-s − 3·8-s − 3·9-s − 2·10-s + 11-s − 3·13-s − 3·14-s − 16-s − 3·18-s + 2·20-s + 22-s + 2·25-s − 3·26-s + 3·28-s − 3·31-s + 5·32-s + 6·35-s + 3·36-s + 6·40-s − 12·43-s − 44-s + 6·45-s + 12·47-s + 2·49-s + ⋯
L(s)  = 1  + 0.707·2-s − 1/2·4-s − 0.894·5-s − 1.13·7-s − 1.06·8-s − 9-s − 0.632·10-s + 0.301·11-s − 0.832·13-s − 0.801·14-s − 1/4·16-s − 0.707·18-s + 0.447·20-s + 0.213·22-s + 2/5·25-s − 0.588·26-s + 0.566·28-s − 0.538·31-s + 0.883·32-s + 1.01·35-s + 1/2·36-s + 0.948·40-s − 1.82·43-s − 0.150·44-s + 0.894·45-s + 1.75·47-s + 2/7·49-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 15680 ^{s/2} \, \Gamma_{\C}(s)^{2} \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 15680 ^{s/2} \, \Gamma_{\C}(s+1/2)^{2} \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(4\)
Conductor: \(15680\)    =    \(2^{6} \cdot 5 \cdot 7^{2}\)
Sign: $-1$
Analytic conductor: \(0.999770\)
Root analytic conductor: \(0.999942\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((4,\ 15680,\ (\ :1/2, 1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$\Gal(F_p)$$F_p(T)$
bad2$C_2$ \( 1 - T + p T^{2} \)
5$C_1$$\times$$C_2$ \( ( 1 - T )( 1 + 3 T + p T^{2} ) \)
7$C_2$ \( 1 + 3 T + p T^{2} \)
good3$C_2^2$ \( 1 + p T^{2} + p^{2} T^{4} \)
11$C_2$$\times$$C_2$ \( ( 1 - 5 T + p T^{2} )( 1 + 4 T + p T^{2} ) \)
13$C_2$$\times$$C_2$ \( ( 1 - 3 T + p T^{2} )( 1 + 6 T + p T^{2} ) \)
17$C_2^2$ \( 1 + 2 T^{2} + p^{2} T^{4} \)
19$C_2^2$ \( 1 - 2 T^{2} + p^{2} T^{4} \)
23$C_2^2$ \( 1 + 27 T^{2} + p^{2} T^{4} \)
29$C_2^2$ \( 1 - 27 T^{2} + p^{2} T^{4} \)
31$C_2$$\times$$C_2$ \( ( 1 - 3 T + p T^{2} )( 1 + 6 T + p T^{2} ) \)
37$C_2^2$ \( 1 - 34 T^{2} + p^{2} T^{4} \)
41$C_2^2$ \( 1 - T^{2} + p^{2} T^{4} \)
43$C_2$ \( ( 1 + 6 T + p T^{2} )^{2} \)
47$C_2$ \( ( 1 - 6 T + p T^{2} )^{2} \)
53$C_2^2$ \( 1 + 24 T^{2} + p^{2} T^{4} \)
59$C_2^2$ \( 1 + 80 T^{2} + p^{2} T^{4} \)
61$C_2$ \( ( 1 + p T^{2} )^{2} \)
67$C_2$ \( ( 1 + 5 T + p T^{2} )^{2} \)
71$C_2^2$ \( 1 + 84 T^{2} + p^{2} T^{4} \)
73$C_2^2$ \( 1 + 16 T^{2} + p^{2} T^{4} \)
79$C_2^2$ \( 1 - 68 T^{2} + p^{2} T^{4} \)
83$C_2^2$ \( 1 - 103 T^{2} + p^{2} T^{4} \)
89$C_2^2$ \( 1 - 97 T^{2} + p^{2} T^{4} \)
97$C_2^2$ \( 1 + 166 T^{2} + p^{2} T^{4} \)
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   \(L(s) = \displaystyle\prod_p \ \prod_{j=1}^{4} (1 - \alpha_{j,p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−10.96239475977261265437401831560, −10.21906533561043611547522146307, −9.701522321659404141328852604713, −9.113276727770291027943770721679, −8.701422134977613715299200488865, −8.084701980984663328503526362712, −7.34764711822666863228185593616, −6.72738373618797346492226426834, −6.04918393150238494247516438834, −5.45896305487914995573018765751, −4.74626267474400246663753655462, −3.96539536481289814528370580310, −3.35221128394077244011021395545, −2.69975189927794208387567623356, 0, 2.69975189927794208387567623356, 3.35221128394077244011021395545, 3.96539536481289814528370580310, 4.74626267474400246663753655462, 5.45896305487914995573018765751, 6.04918393150238494247516438834, 6.72738373618797346492226426834, 7.34764711822666863228185593616, 8.084701980984663328503526362712, 8.701422134977613715299200488865, 9.113276727770291027943770721679, 9.701522321659404141328852604713, 10.21906533561043611547522146307, 10.96239475977261265437401831560

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