Properties

Label 2-686-49.2-c1-0-18
Degree $2$
Conductor $686$
Sign $-0.578 + 0.815i$
Analytic cond. $5.47773$
Root an. cond. $2.34045$
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  + (−0.955 − 0.294i)2-s + (0.804 − 2.05i)3-s + (0.826 + 0.563i)4-s + (0.467 − 0.0705i)5-s + (−1.37 + 1.72i)6-s + (−0.623 − 0.781i)8-s + (−1.35 − 1.26i)9-s + (−0.467 − 0.0705i)10-s + (−0.346 + 0.321i)11-s + (1.82 − 1.24i)12-s + (0.0313 + 0.137i)13-s + (0.231 − 1.01i)15-s + (0.365 + 0.930i)16-s + (−0.505 − 6.74i)17-s + (0.926 + 1.60i)18-s + (2.32 − 4.02i)19-s + ⋯
L(s)  = 1  + (−0.675 − 0.208i)2-s + (0.464 − 1.18i)3-s + (0.413 + 0.281i)4-s + (0.209 − 0.0315i)5-s + (−0.560 + 0.703i)6-s + (−0.220 − 0.276i)8-s + (−0.452 − 0.420i)9-s + (−0.147 − 0.0222i)10-s + (−0.104 + 0.0970i)11-s + (0.525 − 0.358i)12-s + (0.00869 + 0.0380i)13-s + (0.0598 − 0.262i)15-s + (0.0913 + 0.232i)16-s + (−0.122 − 1.63i)17-s + (0.218 + 0.378i)18-s + (0.533 − 0.923i)19-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 686 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.578 + 0.815i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 686 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.578 + 0.815i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(686\)    =    \(2 \cdot 7^{3}\)
Sign: $-0.578 + 0.815i$
Analytic conductor: \(5.47773\)
Root analytic conductor: \(2.34045\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{686} (471, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 686,\ (\ :1/2),\ -0.578 + 0.815i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.559258 - 1.08194i\)
\(L(\frac12)\) \(\approx\) \(0.559258 - 1.08194i\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (0.955 + 0.294i)T \)
7 \( 1 \)
good3 \( 1 + (-0.804 + 2.05i)T + (-2.19 - 2.04i)T^{2} \)
5 \( 1 + (-0.467 + 0.0705i)T + (4.77 - 1.47i)T^{2} \)
11 \( 1 + (0.346 - 0.321i)T + (0.822 - 10.9i)T^{2} \)
13 \( 1 + (-0.0313 - 0.137i)T + (-11.7 + 5.64i)T^{2} \)
17 \( 1 + (0.505 + 6.74i)T + (-16.8 + 2.53i)T^{2} \)
19 \( 1 + (-2.32 + 4.02i)T + (-9.5 - 16.4i)T^{2} \)
23 \( 1 + (-0.309 + 4.12i)T + (-22.7 - 3.42i)T^{2} \)
29 \( 1 + (4.42 + 2.12i)T + (18.0 + 22.6i)T^{2} \)
31 \( 1 + (0.190 + 0.330i)T + (-15.5 + 26.8i)T^{2} \)
37 \( 1 + (-8.92 + 6.08i)T + (13.5 - 34.4i)T^{2} \)
41 \( 1 + (-6.40 - 8.03i)T + (-9.12 + 39.9i)T^{2} \)
43 \( 1 + (4.50 - 5.64i)T + (-9.56 - 41.9i)T^{2} \)
47 \( 1 + (2.67 + 0.825i)T + (38.8 + 26.4i)T^{2} \)
53 \( 1 + (10.3 + 7.07i)T + (19.3 + 49.3i)T^{2} \)
59 \( 1 + (-12.4 - 1.87i)T + (56.3 + 17.3i)T^{2} \)
61 \( 1 + (3.20 - 2.18i)T + (22.2 - 56.7i)T^{2} \)
67 \( 1 + (-4.31 - 7.47i)T + (-33.5 + 58.0i)T^{2} \)
71 \( 1 + (2.99 - 1.44i)T + (44.2 - 55.5i)T^{2} \)
73 \( 1 + (6.06 - 1.87i)T + (60.3 - 41.1i)T^{2} \)
79 \( 1 + (4.99 - 8.65i)T + (-39.5 - 68.4i)T^{2} \)
83 \( 1 + (-2.43 + 10.6i)T + (-74.7 - 36.0i)T^{2} \)
89 \( 1 + (-2.22 - 2.06i)T + (6.65 + 88.7i)T^{2} \)
97 \( 1 + 3.36T + 97T^{2} \)
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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

−9.862055164184150298720081269474, −9.356785886598534083319510761544, −8.349421817088530049657116157633, −7.53518790735459649898766060340, −7.02733718117003081698305574340, −6.00146147018579361589509113638, −4.63329959860111766141088529818, −2.93582391664629103258693717025, −2.15711673933546425275490409722, −0.77385989581585008515504172221, 1.75723199361053572459011798664, 3.31774642060920892202286617688, 4.14611937730538924178038771619, 5.45845348969475117808837262712, 6.25540125513186227723018164501, 7.60396697776342918852537785940, 8.318131413759658866649974901653, 9.222125253497029211080008249014, 9.834385060227405833160142920974, 10.46312715591447277365574958107

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