Properties

Label 2-768-4.3-c2-0-27
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  − 1.73i·3-s + 8.89·5-s + 2.82i·7-s − 2.99·9-s − 18.2i·11-s − 5.79·13-s − 15.4i·15-s − 21.5·17-s − 18.2i·19-s + 4.89·21-s − 33.3i·23-s + 54.1·25-s + 5.19i·27-s − 4.49·29-s − 2.25i·31-s + ⋯
L(s)  = 1  − 0.577i·3-s + 1.77·5-s + 0.404i·7-s − 0.333·9-s − 1.65i·11-s − 0.445·13-s − 1.02i·15-s − 1.27·17-s − 0.960i·19-s + 0.233·21-s − 1.45i·23-s + 2.16·25-s + 0.192i·27-s − 0.154·29-s − 0.0728i·31-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: $\chi_{768} (511, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 768,\ (\ :1),\ i)\)

Particular Values

\(L(\frac{3}{2})\) \(\approx\) \(2.248617576\)
\(L(\frac12)\) \(\approx\) \(2.248617576\)
\(L(2)\) 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 \( 1 + 1.73iT \)
good5 \( 1 - 8.89T + 25T^{2} \)
7 \( 1 - 2.82iT - 49T^{2} \)
11 \( 1 + 18.2iT - 121T^{2} \)
13 \( 1 + 5.79T + 169T^{2} \)
17 \( 1 + 21.5T + 289T^{2} \)
19 \( 1 + 18.2iT - 361T^{2} \)
23 \( 1 + 33.3iT - 529T^{2} \)
29 \( 1 + 4.49T + 841T^{2} \)
31 \( 1 + 2.25iT - 961T^{2} \)
37 \( 1 - 43.1T + 1.36e3T^{2} \)
41 \( 1 - 1.59T + 1.68e3T^{2} \)
43 \( 1 - 63.4iT - 1.84e3T^{2} \)
47 \( 1 + 72.3iT - 2.20e3T^{2} \)
53 \( 1 - 70.2T + 2.80e3T^{2} \)
59 \( 1 - 34.6iT - 3.48e3T^{2} \)
61 \( 1 + 63.5T + 3.72e3T^{2} \)
67 \( 1 - 3.24iT - 4.48e3T^{2} \)
71 \( 1 - 68.4iT - 5.04e3T^{2} \)
73 \( 1 - 10T + 5.32e3T^{2} \)
79 \( 1 + 35.0iT - 6.24e3T^{2} \)
83 \( 1 + 42.2iT - 6.88e3T^{2} \)
89 \( 1 + 5.19T + 7.92e3T^{2} \)
97 \( 1 + 26.8T + 9.40e3T^{2} \)
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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

−9.850974781507147492900796252618, −8.849172767821721302546055517540, −8.594796305994864692943400177031, −7.04768040641855914320018436570, −6.22566617728812207218556579004, −5.76435413505731685460235336730, −4.67803537631472615827829871505, −2.80233275093591062667292651094, −2.23417411110678447708453411007, −0.74540668008873571396194302001, 1.66508507299746835591655952741, 2.47842774047467675162809256834, 4.07611535242803702264794815310, 4.98967070468349598792328807662, 5.81459409450596204527550246736, 6.76426855802276683061480539360, 7.64509418240221267663008476015, 9.113024497850087829296000637594, 9.537062329943614182275638268549, 10.18015552297063689182943219883

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