Properties

Label 2-26-13.2-c4-0-3
Degree $2$
Conductor $26$
Sign $0.544 + 0.838i$
Analytic cond. $2.68761$
Root an. cond. $1.63939$
Motivic weight $4$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (2.73 + 0.732i)2-s + (−6.32 − 10.9i)3-s + (6.92 + 4i)4-s + (24.0 − 24.0i)5-s + (−9.26 − 34.5i)6-s + (−4.96 + 1.33i)7-s + (15.9 + 16i)8-s + (−39.6 + 68.6i)9-s + (83.3 − 48.1i)10-s + (−57.5 + 214. i)11-s − 101. i·12-s + (109. − 128. i)13-s − 14.5·14-s + (−415. − 111. i)15-s + (31.9 + 55.4i)16-s + (32.5 + 18.7i)17-s + ⋯
L(s)  = 1  + (0.683 + 0.183i)2-s + (−0.703 − 1.21i)3-s + (0.433 + 0.250i)4-s + (0.962 − 0.962i)5-s + (−0.257 − 0.960i)6-s + (−0.101 + 0.0271i)7-s + (0.249 + 0.250i)8-s + (−0.489 + 0.847i)9-s + (0.833 − 0.481i)10-s + (−0.475 + 1.77i)11-s − 0.703i·12-s + (0.649 − 0.760i)13-s − 0.0741·14-s + (−1.84 − 0.495i)15-s + (0.124 + 0.216i)16-s + (0.112 + 0.0650i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 26 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.544 + 0.838i)\, \overline{\Lambda}(5-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 26 ^{s/2} \, \Gamma_{\C}(s+2) \, L(s)\cr =\mathstrut & (0.544 + 0.838i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(26\)    =    \(2 \cdot 13\)
Sign: $0.544 + 0.838i$
Analytic conductor: \(2.68761\)
Root analytic conductor: \(1.63939\)
Motivic weight: \(4\)
Rational: no
Arithmetic: yes
Character: $\chi_{26} (15, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 26,\ (\ :2),\ 0.544 + 0.838i)\)

Particular Values

\(L(\frac{5}{2})\) \(\approx\) \(1.52251 - 0.826327i\)
\(L(\frac12)\) \(\approx\) \(1.52251 - 0.826327i\)
\(L(3)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-2.73 - 0.732i)T \)
13 \( 1 + (-109. + 128. i)T \)
good3 \( 1 + (6.32 + 10.9i)T + (-40.5 + 70.1i)T^{2} \)
5 \( 1 + (-24.0 + 24.0i)T - 625iT^{2} \)
7 \( 1 + (4.96 - 1.33i)T + (2.07e3 - 1.20e3i)T^{2} \)
11 \( 1 + (57.5 - 214. i)T + (-1.26e4 - 7.32e3i)T^{2} \)
17 \( 1 + (-32.5 - 18.7i)T + (4.17e4 + 7.23e4i)T^{2} \)
19 \( 1 + (-120. - 448. i)T + (-1.12e5 + 6.51e4i)T^{2} \)
23 \( 1 + (-299. + 172. i)T + (1.39e5 - 2.42e5i)T^{2} \)
29 \( 1 + (430. + 746. i)T + (-3.53e5 + 6.12e5i)T^{2} \)
31 \( 1 + (-454. + 454. i)T - 9.23e5iT^{2} \)
37 \( 1 + (590. - 2.20e3i)T + (-1.62e6 - 9.37e5i)T^{2} \)
41 \( 1 + (-632. - 169. i)T + (2.44e6 + 1.41e6i)T^{2} \)
43 \( 1 + (1.01e3 + 585. i)T + (1.70e6 + 2.96e6i)T^{2} \)
47 \( 1 + (2.74e3 + 2.74e3i)T + 4.87e6iT^{2} \)
53 \( 1 - 1.14e3T + 7.89e6T^{2} \)
59 \( 1 + (4.97e3 - 1.33e3i)T + (1.04e7 - 6.05e6i)T^{2} \)
61 \( 1 + (285. - 493. i)T + (-6.92e6 - 1.19e7i)T^{2} \)
67 \( 1 + (-2.95e3 - 792. i)T + (1.74e7 + 1.00e7i)T^{2} \)
71 \( 1 + (820. + 3.06e3i)T + (-2.20e7 + 1.27e7i)T^{2} \)
73 \( 1 + (-2.09e3 - 2.09e3i)T + 2.83e7iT^{2} \)
79 \( 1 - 3.58e3T + 3.89e7T^{2} \)
83 \( 1 + (-5.09e3 + 5.09e3i)T - 4.74e7iT^{2} \)
89 \( 1 + (-2.65e3 + 9.90e3i)T + (-5.43e7 - 3.13e7i)T^{2} \)
97 \( 1 + (-2.38e3 - 8.88e3i)T + (-7.66e7 + 4.42e7i)T^{2} \)
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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

−16.78880236747012243530663962854, −15.18242233544546890711705113037, −13.42939209093771751987616104507, −12.84617058958767622197718670996, −11.99320812437435034130993024956, −9.992364125770145573751312407625, −7.84246524927249484231353454575, −6.31510679171961504843262698072, −5.13167804865329644740065733435, −1.65896073214218795902142268379, 3.27212779336440379116597521495, 5.27788892700977412759158376649, 6.42303068141771569396884377272, 9.352172290860617071316002554687, 10.84827424931964137898582761130, 11.14147199715221880578601365945, 13.41265370237228742133899997273, 14.31634944048114834934723365431, 15.74765115806918779980852502834, 16.52714503994036696122979107390

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