Properties

Label 2-768-3.2-c2-0-2
Degree $2$
Conductor $768$
Sign $-i$
Analytic cond. $20.9264$
Root an. cond. $4.57454$
Motivic weight $2$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 3i·3-s − 2i·5-s − 10·7-s − 9·9-s − 10i·11-s − 6·15-s + 30i·21-s + 21·25-s + 27i·27-s + 50i·29-s − 38·31-s − 30·33-s + 20i·35-s + 18i·45-s + 51·49-s + ⋯
L(s)  = 1  i·3-s − 0.400i·5-s − 1.42·7-s − 9-s − 0.909i·11-s − 0.400·15-s + 1.42i·21-s + 0.839·25-s + i·27-s + 1.72i·29-s − 1.22·31-s − 0.909·33-s + 0.571i·35-s + 0.400i·45-s + 1.04·49-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -i\, \overline{\Lambda}(3-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s+1) \, L(s)\cr =\mathstrut & -i\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(768\)    =    \(2^{8} \cdot 3\)
Sign: $-i$
Analytic conductor: \(20.9264\)
Root analytic conductor: \(4.57454\)
Motivic weight: \(2\)
Rational: no
Arithmetic: yes
Character: $\chi_{768} (257, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 768,\ (\ :1),\ -i)\)

Particular Values

\(L(\frac{3}{2})\) \(\approx\) \(0.1373585749\)
\(L(\frac12)\) \(\approx\) \(0.1373585749\)
\(L(2)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 + 3iT \)
good5 \( 1 + 2iT - 25T^{2} \)
7 \( 1 + 10T + 49T^{2} \)
11 \( 1 + 10iT - 121T^{2} \)
13 \( 1 + 169T^{2} \)
17 \( 1 - 289T^{2} \)
19 \( 1 + 361T^{2} \)
23 \( 1 - 529T^{2} \)
29 \( 1 - 50iT - 841T^{2} \)
31 \( 1 + 38T + 961T^{2} \)
37 \( 1 + 1.36e3T^{2} \)
41 \( 1 - 1.68e3T^{2} \)
43 \( 1 + 1.84e3T^{2} \)
47 \( 1 - 2.20e3T^{2} \)
53 \( 1 - 94iT - 2.80e3T^{2} \)
59 \( 1 + 10iT - 3.48e3T^{2} \)
61 \( 1 + 3.72e3T^{2} \)
67 \( 1 + 4.48e3T^{2} \)
71 \( 1 - 5.04e3T^{2} \)
73 \( 1 + 50T + 5.32e3T^{2} \)
79 \( 1 - 58T + 6.24e3T^{2} \)
83 \( 1 + 134iT - 6.88e3T^{2} \)
89 \( 1 - 7.92e3T^{2} \)
97 \( 1 + 190T + 9.40e3T^{2} \)
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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

−10.43035248557573640235050703738, −9.113794001124889926639126798960, −8.831620550277877896122846696761, −7.63398212579587543106380995877, −6.80503639046343421827570143715, −6.09020641133191062633505379240, −5.22398655645033158717428551191, −3.56916677160683329053840820316, −2.78468430053239602587745237198, −1.20395447230219946815278538827, 0.04994528787496934983933144159, 2.44160318751001803912962730972, 3.41780303743324726664567926414, 4.27028590879526056818359667723, 5.41976122649572809557997901164, 6.37148167477301171479241778535, 7.15742536086699550173109596587, 8.364568472834463303685792094815, 9.464146010356835504146729453456, 9.767007081464545290530271006547

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