Properties

Label 2-91-91.90-c4-0-13
Degree $2$
Conductor $91$
Sign $1$
Analytic cond. $9.40666$
Root an. cond. $3.06702$
Motivic weight $4$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 16·4-s − 41·5-s + 49·7-s + 81·9-s + 169·13-s + 256·16-s − 97·19-s − 656·20-s + 967·23-s + 1.05e3·25-s + 784·28-s − 593·29-s + 1.10e3·31-s − 2.00e3·35-s + 1.29e3·36-s − 2.46e3·41-s − 3.67e3·43-s − 3.32e3·45-s + 2.14e3·47-s + 2.40e3·49-s + 2.70e3·52-s − 5.39e3·53-s + 1.13e3·59-s + 3.96e3·63-s + 4.09e3·64-s − 6.92e3·65-s − 9.81e3·73-s + ⋯
L(s)  = 1  + 4-s − 1.63·5-s + 7-s + 9-s + 13-s + 16-s − 0.268·19-s − 1.63·20-s + 1.82·23-s + 1.68·25-s + 28-s − 0.705·29-s + 1.14·31-s − 1.63·35-s + 36-s − 1.46·41-s − 1.98·43-s − 1.63·45-s + 0.970·47-s + 49-s + 52-s − 1.91·53-s + 0.326·59-s + 63-s + 64-s − 1.63·65-s − 1.84·73-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 91 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(5-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 91 ^{s/2} \, \Gamma_{\C}(s+2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(91\)    =    \(7 \cdot 13\)
Sign: $1$
Analytic conductor: \(9.40666\)
Root analytic conductor: \(3.06702\)
Motivic weight: \(4\)
Rational: yes
Arithmetic: yes
Character: $\chi_{91} (90, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 91,\ (\ :2),\ 1)\)

Particular Values

\(L(\frac{5}{2})\) \(\approx\) \(1.981973556\)
\(L(\frac12)\) \(\approx\) \(1.981973556\)
\(L(3)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 - p^{2} T \)
13 \( 1 - p^{2} T \)
good2 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
3 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
5 \( 1 + 41 T + p^{4} T^{2} \)
11 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
17 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
19 \( 1 + 97 T + p^{4} T^{2} \)
23 \( 1 - 967 T + p^{4} T^{2} \)
29 \( 1 + 593 T + p^{4} T^{2} \)
31 \( 1 - 1103 T + p^{4} T^{2} \)
37 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
41 \( 1 + 2462 T + p^{4} T^{2} \)
43 \( 1 + 3673 T + p^{4} T^{2} \)
47 \( 1 - 2143 T + p^{4} T^{2} \)
53 \( 1 + 5393 T + p^{4} T^{2} \)
59 \( 1 - 1138 T + p^{4} T^{2} \)
61 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
67 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
71 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
73 \( 1 + 9817 T + p^{4} T^{2} \)
79 \( 1 + 7993 T + p^{4} T^{2} \)
83 \( 1 - 11503 T + p^{4} T^{2} \)
89 \( 1 - 11383 T + p^{4} T^{2} \)
97 \( 1 + 1657 T + p^{4} T^{2} \)
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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

−13.16840616219324410329285153402, −11.97413198773251448819492189267, −11.31440826791628746603171969843, −10.53773123289976608087096860117, −8.537818357251341560942923479708, −7.63692052627089201536134423019, −6.75063452462684851341265838120, −4.75939178165769056180722698816, −3.44096392440973820212473172703, −1.32005647531832515120755152816, 1.32005647531832515120755152816, 3.44096392440973820212473172703, 4.75939178165769056180722698816, 6.75063452462684851341265838120, 7.63692052627089201536134423019, 8.537818357251341560942923479708, 10.53773123289976608087096860117, 11.31440826791628746603171969843, 11.97413198773251448819492189267, 13.16840616219324410329285153402

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