Properties

Label 2-26-1.1-c7-0-1
Degree $2$
Conductor $26$
Sign $1$
Analytic cond. $8.12201$
Root an. cond. $2.84991$
Motivic weight $7$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 8·2-s − 87·3-s + 64·4-s + 321·5-s − 696·6-s − 181·7-s + 512·8-s + 5.38e3·9-s + 2.56e3·10-s + 7.78e3·11-s − 5.56e3·12-s + 2.19e3·13-s − 1.44e3·14-s − 2.79e4·15-s + 4.09e3·16-s + 9.06e3·17-s + 4.30e4·18-s − 3.71e4·19-s + 2.05e4·20-s + 1.57e4·21-s + 6.22e4·22-s + 1.90e4·23-s − 4.45e4·24-s + 2.49e4·25-s + 1.75e4·26-s − 2.77e5·27-s − 1.15e4·28-s + ⋯
L(s)  = 1  + 0.707·2-s − 1.86·3-s + 1/2·4-s + 1.14·5-s − 1.31·6-s − 0.199·7-s + 0.353·8-s + 2.46·9-s + 0.812·10-s + 1.76·11-s − 0.930·12-s + 0.277·13-s − 0.141·14-s − 2.13·15-s + 1/4·16-s + 0.447·17-s + 1.74·18-s − 1.24·19-s + 0.574·20-s + 0.371·21-s + 1.24·22-s + 0.325·23-s − 0.657·24-s + 0.318·25-s + 0.196·26-s − 2.71·27-s − 0.0997·28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 26 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(8-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 26 ^{s/2} \, \Gamma_{\C}(s+7/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(26\)    =    \(2 \cdot 13\)
Sign: $1$
Analytic conductor: \(8.12201\)
Root analytic conductor: \(2.84991\)
Motivic weight: \(7\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 26,\ (\ :7/2),\ 1)\)

Particular Values

\(L(4)\) \(\approx\) \(1.847202785\)
\(L(\frac12)\) \(\approx\) \(1.847202785\)
\(L(\frac{9}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - p^{3} T \)
13 \( 1 - p^{3} T \)
good3 \( 1 + 29 p T + p^{7} T^{2} \)
5 \( 1 - 321 T + p^{7} T^{2} \)
7 \( 1 + 181 T + p^{7} T^{2} \)
11 \( 1 - 7782 T + p^{7} T^{2} \)
17 \( 1 - 9069 T + p^{7} T^{2} \)
19 \( 1 + 37150 T + p^{7} T^{2} \)
23 \( 1 - 19008 T + p^{7} T^{2} \)
29 \( 1 - 174750 T + p^{7} T^{2} \)
31 \( 1 - 29012 T + p^{7} T^{2} \)
37 \( 1 - 323669 T + p^{7} T^{2} \)
41 \( 1 - 795312 T + p^{7} T^{2} \)
43 \( 1 + 314137 T + p^{7} T^{2} \)
47 \( 1 + 447441 T + p^{7} T^{2} \)
53 \( 1 + 1469232 T + p^{7} T^{2} \)
59 \( 1 - 1627770 T + p^{7} T^{2} \)
61 \( 1 + 2399608 T + p^{7} T^{2} \)
67 \( 1 + 64066 T + p^{7} T^{2} \)
71 \( 1 + 322383 T + p^{7} T^{2} \)
73 \( 1 + 4454782 T + p^{7} T^{2} \)
79 \( 1 - 753560 T + p^{7} T^{2} \)
83 \( 1 + 1219092 T + p^{7} T^{2} \)
89 \( 1 - 3390330 T + p^{7} T^{2} \)
97 \( 1 - 1628774 T + p^{7} T^{2} \)
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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

−16.21283223838623658031062621141, −14.52606818858193387418708209882, −13.08108880815631645479012076645, −12.06288489059628952218744748825, −10.96247399378092781974030817554, −9.707502403325843454586535582075, −6.53559471469993015818510121343, −6.03489597522478265562738267179, −4.47123091425630715880737541735, −1.31960856305599856038970578627, 1.31960856305599856038970578627, 4.47123091425630715880737541735, 6.03489597522478265562738267179, 6.53559471469993015818510121343, 9.707502403325843454586535582075, 10.96247399378092781974030817554, 12.06288489059628952218744748825, 13.08108880815631645479012076645, 14.52606818858193387418708209882, 16.21283223838623658031062621141

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