Properties

Label 2-642-1.1-c1-0-18
Degree $2$
Conductor $642$
Sign $-1$
Analytic cond. $5.12639$
Root an. cond. $2.26415$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2-s − 3-s + 4-s − 5-s − 6-s − 2·7-s + 8-s + 9-s − 10-s − 4·11-s − 12-s − 6·13-s − 2·14-s + 15-s + 16-s + 18-s + 2·19-s − 20-s + 2·21-s − 4·22-s − 23-s − 24-s − 4·25-s − 6·26-s − 27-s − 2·28-s − 6·29-s + ⋯
L(s)  = 1  + 0.707·2-s − 0.577·3-s + 1/2·4-s − 0.447·5-s − 0.408·6-s − 0.755·7-s + 0.353·8-s + 1/3·9-s − 0.316·10-s − 1.20·11-s − 0.288·12-s − 1.66·13-s − 0.534·14-s + 0.258·15-s + 1/4·16-s + 0.235·18-s + 0.458·19-s − 0.223·20-s + 0.436·21-s − 0.852·22-s − 0.208·23-s − 0.204·24-s − 4/5·25-s − 1.17·26-s − 0.192·27-s − 0.377·28-s − 1.11·29-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 642 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 642 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(642\)    =    \(2 \cdot 3 \cdot 107\)
Sign: $-1$
Analytic conductor: \(5.12639\)
Root analytic conductor: \(2.26415\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 642,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - T \)
3 \( 1 + T \)
107 \( 1 - T \)
good5 \( 1 + T + p T^{2} \)
7 \( 1 + 2 T + p T^{2} \)
11 \( 1 + 4 T + p T^{2} \)
13 \( 1 + 6 T + p T^{2} \)
17 \( 1 + p T^{2} \)
19 \( 1 - 2 T + p T^{2} \)
23 \( 1 + T + p T^{2} \)
29 \( 1 + 6 T + p T^{2} \)
31 \( 1 - 10 T + p T^{2} \)
37 \( 1 + 4 T + p T^{2} \)
41 \( 1 + 7 T + p T^{2} \)
43 \( 1 - T + p T^{2} \)
47 \( 1 - T + p T^{2} \)
53 \( 1 + 6 T + p T^{2} \)
59 \( 1 + 5 T + p T^{2} \)
61 \( 1 - 10 T + p T^{2} \)
67 \( 1 + 5 T + p T^{2} \)
71 \( 1 - 6 T + p T^{2} \)
73 \( 1 - 14 T + p T^{2} \)
79 \( 1 - 9 T + p T^{2} \)
83 \( 1 + 2 T + p T^{2} \)
89 \( 1 - T + p T^{2} \)
97 \( 1 + 10 T + p T^{2} \)
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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

−10.13075362161529521985442973840, −9.675939185100960136955050953414, −8.045232506749785170052767772894, −7.35941913278579244983454854491, −6.46198133746891100484101184249, −5.38508550055242831936429997317, −4.73601267781378194181480807875, −3.47275145751272543922949372461, −2.36899373377871972661831920342, 0, 2.36899373377871972661831920342, 3.47275145751272543922949372461, 4.73601267781378194181480807875, 5.38508550055242831936429997317, 6.46198133746891100484101184249, 7.35941913278579244983454854491, 8.045232506749785170052767772894, 9.675939185100960136955050953414, 10.13075362161529521985442973840

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