Properties

Label 2-7-7.2-c17-0-0
Degree $2$
Conductor $7$
Sign $0.295 + 0.955i$
Analytic cond. $12.8255$
Root an. cond. $3.58127$
Motivic weight $17$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (−265. + 459. i)2-s + (9.52e3 + 1.64e4i)3-s + (−7.50e4 − 1.29e5i)4-s + (2.24e5 − 3.88e5i)5-s − 1.00e7·6-s + (−1.05e7 − 1.10e7i)7-s + 1.00e7·8-s + (−1.16e8 + 2.02e8i)9-s + (1.19e8 + 2.06e8i)10-s + (−5.29e8 − 9.16e8i)11-s + (1.42e9 − 2.47e9i)12-s − 1.79e9·13-s + (7.86e9 − 1.89e9i)14-s + 8.55e9·15-s + (7.16e9 − 1.24e10i)16-s + (2.07e9 + 3.60e9i)17-s + ⋯
L(s)  = 1  + (−0.732 + 1.26i)2-s + (0.838 + 1.45i)3-s + (−0.572 − 0.991i)4-s + (0.257 − 0.445i)5-s − 2.45·6-s + (−0.689 − 0.724i)7-s + 0.212·8-s + (−0.904 + 1.56i)9-s + (0.376 + 0.651i)10-s + (−0.744 − 1.28i)11-s + (0.959 − 1.66i)12-s − 0.608·13-s + (1.42 − 0.343i)14-s + 0.861·15-s + (0.417 − 0.722i)16-s + (0.0723 + 0.125i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.295 + 0.955i)\, \overline{\Lambda}(18-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s+17/2) \, L(s)\cr =\mathstrut & (0.295 + 0.955i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(7\)
Sign: $0.295 + 0.955i$
Analytic conductor: \(12.8255\)
Root analytic conductor: \(3.58127\)
Motivic weight: \(17\)
Rational: no
Arithmetic: yes
Character: $\chi_{7} (2, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 7,\ (\ :17/2),\ 0.295 + 0.955i)\)

Particular Values

\(L(9)\) \(\approx\) \(0.253047 - 0.186578i\)
\(L(\frac12)\) \(\approx\) \(0.253047 - 0.186578i\)
\(L(\frac{19}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 + (1.05e7 + 1.10e7i)T \)
good2 \( 1 + (265. - 459. i)T + (-6.55e4 - 1.13e5i)T^{2} \)
3 \( 1 + (-9.52e3 - 1.64e4i)T + (-6.45e7 + 1.11e8i)T^{2} \)
5 \( 1 + (-2.24e5 + 3.88e5i)T + (-3.81e11 - 6.60e11i)T^{2} \)
11 \( 1 + (5.29e8 + 9.16e8i)T + (-2.52e17 + 4.37e17i)T^{2} \)
13 \( 1 + 1.79e9T + 8.65e18T^{2} \)
17 \( 1 + (-2.07e9 - 3.60e9i)T + (-4.13e20 + 7.16e20i)T^{2} \)
19 \( 1 + (4.53e10 - 7.85e10i)T + (-2.74e21 - 4.74e21i)T^{2} \)
23 \( 1 + (3.17e11 - 5.50e11i)T + (-7.05e22 - 1.22e23i)T^{2} \)
29 \( 1 + 1.62e12T + 7.25e24T^{2} \)
31 \( 1 + (1.43e12 + 2.48e12i)T + (-1.12e25 + 1.95e25i)T^{2} \)
37 \( 1 + (-3.61e11 + 6.25e11i)T + (-2.28e26 - 3.95e26i)T^{2} \)
41 \( 1 + 8.70e13T + 2.61e27T^{2} \)
43 \( 1 - 3.31e13T + 5.87e27T^{2} \)
47 \( 1 + (-3.10e13 + 5.38e13i)T + (-1.33e28 - 2.30e28i)T^{2} \)
53 \( 1 + (-3.11e14 - 5.40e14i)T + (-1.02e29 + 1.77e29i)T^{2} \)
59 \( 1 + (-2.18e14 - 3.78e14i)T + (-6.35e29 + 1.10e30i)T^{2} \)
61 \( 1 + (-9.27e14 + 1.60e15i)T + (-1.12e30 - 1.94e30i)T^{2} \)
67 \( 1 + (3.75e14 + 6.50e14i)T + (-5.52e30 + 9.56e30i)T^{2} \)
71 \( 1 + 3.64e15T + 2.96e31T^{2} \)
73 \( 1 + (2.44e15 + 4.23e15i)T + (-2.37e31 + 4.11e31i)T^{2} \)
79 \( 1 + (-8.44e15 + 1.46e16i)T + (-9.09e31 - 1.57e32i)T^{2} \)
83 \( 1 - 1.74e16T + 4.21e32T^{2} \)
89 \( 1 + (2.22e16 - 3.85e16i)T + (-6.89e32 - 1.19e33i)T^{2} \)
97 \( 1 + 9.07e16T + 5.95e33T^{2} \)
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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

−19.08503140077857481900535864263, −16.89419256078521954468161293606, −16.27320983494450635034779418026, −15.13323921637153715322826627864, −13.71512157945217018321106236760, −10.26564311958015051621747107795, −9.190061564311257205543207034703, −7.901400229413651515581082638751, −5.57498643543891402187466752276, −3.50368927561926455500465437518, 0.14156735927688682853869849342, 2.13597976932978289928035699400, 2.64469175065879286483477094566, 6.82771410675958726772746968907, 8.597247392378902131473543902606, 10.05942152115049796872732759982, 12.20256239325383340090996062528, 12.95711488182070595676832162224, 14.86612860266634006387233006499, 17.88389174799590502504244396266

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