Properties

Label 2-7-7.6-c40-0-13
Degree $2$
Conductor $7$
Sign $1$
Analytic cond. $70.9395$
Root an. cond. $8.42256$
Motivic weight $40$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 6.54e5·2-s − 6.70e11·4-s + 7.97e16·7-s + 1.15e18·8-s + 1.21e19·9-s + 9.76e20·11-s − 5.22e22·14-s − 2.13e22·16-s − 7.96e24·18-s − 6.39e26·22-s − 6.38e26·23-s + 9.09e27·25-s − 5.35e28·28-s + 1.32e29·29-s − 1.26e30·32-s − 8.15e30·36-s − 9.64e30·37-s − 5.77e32·43-s − 6.55e32·44-s + 4.17e32·46-s + 6.36e33·49-s − 5.95e33·50-s + 2.59e34·53-s + 9.24e34·56-s − 8.65e34·58-s + 9.70e35·63-s + 8.48e35·64-s + ⋯
L(s)  = 1  − 0.624·2-s − 0.610·4-s + 7-s + 1.00·8-s + 9-s + 1.45·11-s − 0.624·14-s − 0.0176·16-s − 0.624·18-s − 0.906·22-s − 0.371·23-s + 25-s − 0.610·28-s + 0.747·29-s − 0.994·32-s − 0.610·36-s − 0.417·37-s − 1.23·43-s − 0.885·44-s + 0.232·46-s + 49-s − 0.624·50-s + 0.848·53-s + 1.00·56-s − 0.466·58-s + 63-s + 0.638·64-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(41-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s+20) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(7\)
Sign: $1$
Analytic conductor: \(70.9395\)
Root analytic conductor: \(8.42256\)
Motivic weight: \(40\)
Rational: yes
Arithmetic: yes
Character: $\chi_{7} (6, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 7,\ (\ :20),\ 1)\)

Particular Values

\(L(\frac{41}{2})\) \(\approx\) \(1.902119758\)
\(L(\frac12)\) \(\approx\) \(1.902119758\)
\(L(21)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 - p^{20} T \)
good2 \( 1 + 654751 T + p^{40} T^{2} \)
3 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
5 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
11 \( 1 - \)\(97\!\cdots\!74\)\( T + p^{40} T^{2} \)
13 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
17 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
19 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
23 \( 1 + \)\(63\!\cdots\!26\)\( T + p^{40} T^{2} \)
29 \( 1 - \)\(13\!\cdots\!74\)\( T + p^{40} T^{2} \)
31 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
37 \( 1 + \)\(96\!\cdots\!26\)\( T + p^{40} T^{2} \)
41 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
43 \( 1 + \)\(57\!\cdots\!26\)\( T + p^{40} T^{2} \)
47 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
53 \( 1 - \)\(25\!\cdots\!02\)\( T + p^{40} T^{2} \)
59 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
61 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
67 \( 1 + \)\(59\!\cdots\!26\)\( T + p^{40} T^{2} \)
71 \( 1 - \)\(20\!\cdots\!74\)\( T + p^{40} T^{2} \)
73 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
79 \( 1 - \)\(17\!\cdots\!74\)\( T + p^{40} T^{2} \)
83 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
89 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
97 \( ( 1 - p^{20} T )( 1 + p^{20} T ) \)
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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

−13.68909142621842487746815716435, −12.10953552442318558045580719230, −10.57438922334354711884799587529, −9.321548049094323142157179960694, −8.220970746392455765559409572788, −6.87271437510415180563381429724, −4.89329654923641429222853625035, −3.93873307073985493207595473400, −1.67249784307047529416145631203, −0.894353921675196380085577415088, 0.894353921675196380085577415088, 1.67249784307047529416145631203, 3.93873307073985493207595473400, 4.89329654923641429222853625035, 6.87271437510415180563381429724, 8.220970746392455765559409572788, 9.321548049094323142157179960694, 10.57438922334354711884799587529, 12.10953552442318558045580719230, 13.68909142621842487746815716435

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