Properties

Label 2-91-91.90-c4-0-19
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

\(L(\frac{5}{2})\) \(\approx\) \(2.568307757\)
\(L(\frac12)\) \(\approx\) \(2.568307757\)
\(L(3)\) 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

−13.04643174493185848731001845400, −12.67696594162749887034309699856, −11.01195011315370979960498541434, −9.927962684909888507917798209587, −9.417543296442854553616825405045, −7.24484458923481231762787443680, −6.50596123998285886600341052584, −5.28693320782193333808137338191, −2.96010362954622717678977482941, −1.64269271324134149011256450894, 1.64269271324134149011256450894, 2.96010362954622717678977482941, 5.28693320782193333808137338191, 6.50596123998285886600341052584, 7.24484458923481231762787443680, 9.417543296442854553616825405045, 9.927962684909888507917798209587, 11.01195011315370979960498541434, 12.67696594162749887034309699856, 13.04643174493185848731001845400

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