Properties

Label 2-1280-8.5-c3-0-26
Degree $2$
Conductor $1280$
Sign $0.707 - 0.707i$
Analytic cond. $75.5224$
Root an. cond. $8.69036$
Motivic weight $3$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 2i·3-s − 5i·5-s − 6·7-s + 23·9-s + 32i·11-s + 38i·13-s − 10·15-s + 26·17-s − 100i·19-s + 12i·21-s + 78·23-s − 25·25-s − 100i·27-s + 50i·29-s − 108·31-s + ⋯
L(s)  = 1  − 0.384i·3-s − 0.447i·5-s − 0.323·7-s + 0.851·9-s + 0.877i·11-s + 0.810i·13-s − 0.172·15-s + 0.370·17-s − 1.20i·19-s + 0.124i·21-s + 0.707·23-s − 0.200·25-s − 0.712i·27-s + 0.320i·29-s − 0.625·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.707 - 0.707i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (0.707 - 0.707i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1280\)    =    \(2^{8} \cdot 5\)
Sign: $0.707 - 0.707i$
Analytic conductor: \(75.5224\)
Root analytic conductor: \(8.69036\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: $\chi_{1280} (641, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1280,\ (\ :3/2),\ 0.707 - 0.707i)\)

Particular Values

\(L(2)\) \(\approx\) \(1.820187113\)
\(L(\frac12)\) \(\approx\) \(1.820187113\)
\(L(\frac{5}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
5 \( 1 + 5iT \)
good3 \( 1 + 2iT - 27T^{2} \)
7 \( 1 + 6T + 343T^{2} \)
11 \( 1 - 32iT - 1.33e3T^{2} \)
13 \( 1 - 38iT - 2.19e3T^{2} \)
17 \( 1 - 26T + 4.91e3T^{2} \)
19 \( 1 + 100iT - 6.85e3T^{2} \)
23 \( 1 - 78T + 1.21e4T^{2} \)
29 \( 1 - 50iT - 2.43e4T^{2} \)
31 \( 1 + 108T + 2.97e4T^{2} \)
37 \( 1 - 266iT - 5.06e4T^{2} \)
41 \( 1 + 22T + 6.89e4T^{2} \)
43 \( 1 - 442iT - 7.95e4T^{2} \)
47 \( 1 + 514T + 1.03e5T^{2} \)
53 \( 1 - 2iT - 1.48e5T^{2} \)
59 \( 1 - 500iT - 2.05e5T^{2} \)
61 \( 1 - 518iT - 2.26e5T^{2} \)
67 \( 1 + 126iT - 3.00e5T^{2} \)
71 \( 1 + 412T + 3.57e5T^{2} \)
73 \( 1 - 878T + 3.89e5T^{2} \)
79 \( 1 - 600T + 4.93e5T^{2} \)
83 \( 1 + 282iT - 5.71e5T^{2} \)
89 \( 1 - 150T + 7.04e5T^{2} \)
97 \( 1 - 386T + 9.12e5T^{2} \)
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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

−9.502840790716678306870017170525, −8.648867879379876927101683888800, −7.61063701121957513711166948380, −6.95888381870986730612657390245, −6.31868363154200435459794213377, −4.91936563217609242711024672185, −4.48623018539530115482068681255, −3.19947598367517014474693879066, −1.94573033343062993260221654129, −1.04467332713503474572271910760, 0.47795396462831431387301314890, 1.84648132656004475961690105100, 3.30123780713131655900810561388, 3.70643185142289997713092646597, 5.03053531508750380963378540030, 5.82575371851561993031743552373, 6.70782261965001786869428689032, 7.60701935564063159120556809079, 8.324399933382693724596262214049, 9.379882434636669955351346149267

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