Properties

Label 2-640-128.85-c1-0-58
Degree $2$
Conductor $640$
Sign $-0.584 + 0.811i$
Analytic cond. $5.11042$
Root an. cond. $2.26062$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (0.998 − 1.00i)2-s + (1.57 − 1.92i)3-s + (−0.00786 − 1.99i)4-s + (0.956 − 0.290i)5-s + (−0.352 − 3.50i)6-s + (1.57 + 0.312i)7-s + (−2.01 − 1.98i)8-s + (−0.624 − 3.13i)9-s + (0.664 − 1.24i)10-s + (−0.747 − 0.0736i)11-s + (−3.86 − 3.14i)12-s + (−1.27 + 4.20i)13-s + (1.88 − 1.26i)14-s + (0.952 − 2.30i)15-s + (−3.99 + 0.0314i)16-s + (0.465 + 1.12i)17-s + ⋯
L(s)  = 1  + (0.705 − 0.708i)2-s + (0.912 − 1.11i)3-s + (−0.00393 − 0.999i)4-s + (0.427 − 0.129i)5-s + (−0.143 − 1.43i)6-s + (0.594 + 0.118i)7-s + (−0.711 − 0.702i)8-s + (−0.208 − 1.04i)9-s + (0.210 − 0.394i)10-s + (−0.225 − 0.0222i)11-s + (−1.11 − 0.907i)12-s + (−0.353 + 1.16i)13-s + (0.502 − 0.337i)14-s + (0.246 − 0.593i)15-s + (−0.999 + 0.00786i)16-s + (0.112 + 0.272i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.584 + 0.811i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.584 + 0.811i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(640\)    =    \(2^{7} \cdot 5\)
Sign: $-0.584 + 0.811i$
Analytic conductor: \(5.11042\)
Root analytic conductor: \(2.26062\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{640} (341, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 640,\ (\ :1/2),\ -0.584 + 0.811i)\)

Particular Values

\(L(1)\) \(\approx\) \(1.39439 - 2.72337i\)
\(L(\frac12)\) \(\approx\) \(1.39439 - 2.72337i\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-0.998 + 1.00i)T \)
5 \( 1 + (-0.956 + 0.290i)T \)
good3 \( 1 + (-1.57 + 1.92i)T + (-0.585 - 2.94i)T^{2} \)
7 \( 1 + (-1.57 - 0.312i)T + (6.46 + 2.67i)T^{2} \)
11 \( 1 + (0.747 + 0.0736i)T + (10.7 + 2.14i)T^{2} \)
13 \( 1 + (1.27 - 4.20i)T + (-10.8 - 7.22i)T^{2} \)
17 \( 1 + (-0.465 - 1.12i)T + (-12.0 + 12.0i)T^{2} \)
19 \( 1 + (-2.40 + 1.28i)T + (10.5 - 15.7i)T^{2} \)
23 \( 1 + (2.14 - 3.21i)T + (-8.80 - 21.2i)T^{2} \)
29 \( 1 + (-0.496 - 5.03i)T + (-28.4 + 5.65i)T^{2} \)
31 \( 1 + (0.858 + 0.858i)T + 31iT^{2} \)
37 \( 1 + (0.0179 - 0.0335i)T + (-20.5 - 30.7i)T^{2} \)
41 \( 1 + (-0.0467 - 0.0312i)T + (15.6 + 37.8i)T^{2} \)
43 \( 1 + (3.70 + 4.51i)T + (-8.38 + 42.1i)T^{2} \)
47 \( 1 + (-6.11 + 2.53i)T + (33.2 - 33.2i)T^{2} \)
53 \( 1 + (0.251 - 2.55i)T + (-51.9 - 10.3i)T^{2} \)
59 \( 1 + (-2.01 - 6.62i)T + (-49.0 + 32.7i)T^{2} \)
61 \( 1 + (10.4 + 8.55i)T + (11.9 + 59.8i)T^{2} \)
67 \( 1 + (2.11 + 1.73i)T + (13.0 + 65.7i)T^{2} \)
71 \( 1 + (1.41 - 7.09i)T + (-65.5 - 27.1i)T^{2} \)
73 \( 1 + (7.51 - 1.49i)T + (67.4 - 27.9i)T^{2} \)
79 \( 1 + (-13.4 - 5.56i)T + (55.8 + 55.8i)T^{2} \)
83 \( 1 + (7.06 + 13.2i)T + (-46.1 + 69.0i)T^{2} \)
89 \( 1 + (1.08 + 1.61i)T + (-34.0 + 82.2i)T^{2} \)
97 \( 1 + (-5.02 - 5.02i)T + 97iT^{2} \)
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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

−10.34125307972243987458095689244, −9.326506878461842367348091756399, −8.676578093227370548834057711359, −7.51994375753691994039690983710, −6.74296149034056433015464896153, −5.62476753950928617889773525442, −4.60206829332315426265653448732, −3.28457266575985090095734733386, −2.15829040195882228338617724341, −1.47672841466859660760588267356, 2.53673067741494543723259348135, 3.38451373684007957875931220892, 4.47593115452331427609109601216, 5.19584599019060110711043777071, 6.19845603832404401671796473667, 7.60615074213990405820601309686, 8.112309780270616999359255933392, 9.051564796887419534200589220886, 9.933662567173035515862647402378, 10.66665564353815036674190341876

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