Properties

Label 2-7-7.4-c17-0-1
Degree $2$
Conductor $7$
Sign $-0.968 - 0.247i$
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  + (−58.4 − 101. i)2-s + (−1.00e4 + 1.73e4i)3-s + (5.87e4 − 1.01e5i)4-s + (5.26e5 + 9.11e5i)5-s + 2.34e6·6-s + (1.15e7 + 9.94e6i)7-s − 2.90e7·8-s + (−1.37e8 − 2.37e8i)9-s + (6.14e7 − 1.06e8i)10-s + (−3.23e8 + 5.60e8i)11-s + (1.17e9 + 2.04e9i)12-s − 2.11e9·13-s + (3.31e8 − 1.75e9i)14-s − 2.11e10·15-s + (−6.00e9 − 1.03e10i)16-s + (−1.27e10 + 2.21e10i)17-s + ⋯
L(s)  = 1  + (−0.161 − 0.279i)2-s + (−0.883 + 1.53i)3-s + (0.447 − 0.775i)4-s + (0.602 + 1.04i)5-s + 0.570·6-s + (0.757 + 0.652i)7-s − 0.611·8-s + (−1.06 − 1.83i)9-s + (0.194 − 0.336i)10-s + (−0.454 + 0.788i)11-s + (0.791 + 1.37i)12-s − 0.717·13-s + (0.0599 − 0.316i)14-s − 2.13·15-s + (−0.349 − 0.604i)16-s + (−0.444 + 0.769i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.968 - 0.247i)\, \overline{\Lambda}(18-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s+17/2) \, L(s)\cr =\mathstrut & (-0.968 - 0.247i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(7\)
Sign: $-0.968 - 0.247i$
Analytic conductor: \(12.8255\)
Root analytic conductor: \(3.58127\)
Motivic weight: \(17\)
Rational: no
Arithmetic: yes
Character: $\chi_{7} (4, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 7,\ (\ :17/2),\ -0.968 - 0.247i)\)

Particular Values

\(L(9)\) \(\approx\) \(0.112839 + 0.896457i\)
\(L(\frac12)\) \(\approx\) \(0.112839 + 0.896457i\)
\(L(\frac{19}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 + (-1.15e7 - 9.94e6i)T \)
good2 \( 1 + (58.4 + 101. i)T + (-6.55e4 + 1.13e5i)T^{2} \)
3 \( 1 + (1.00e4 - 1.73e4i)T + (-6.45e7 - 1.11e8i)T^{2} \)
5 \( 1 + (-5.26e5 - 9.11e5i)T + (-3.81e11 + 6.60e11i)T^{2} \)
11 \( 1 + (3.23e8 - 5.60e8i)T + (-2.52e17 - 4.37e17i)T^{2} \)
13 \( 1 + 2.11e9T + 8.65e18T^{2} \)
17 \( 1 + (1.27e10 - 2.21e10i)T + (-4.13e20 - 7.16e20i)T^{2} \)
19 \( 1 + (2.09e10 + 3.63e10i)T + (-2.74e21 + 4.74e21i)T^{2} \)
23 \( 1 + (3.20e10 + 5.55e10i)T + (-7.05e22 + 1.22e23i)T^{2} \)
29 \( 1 + 3.14e12T + 7.25e24T^{2} \)
31 \( 1 + (-2.92e12 + 5.06e12i)T + (-1.12e25 - 1.95e25i)T^{2} \)
37 \( 1 + (-1.83e13 - 3.17e13i)T + (-2.28e26 + 3.95e26i)T^{2} \)
41 \( 1 + 3.62e13T + 2.61e27T^{2} \)
43 \( 1 + 1.06e14T + 5.87e27T^{2} \)
47 \( 1 + (-1.23e14 - 2.13e14i)T + (-1.33e28 + 2.30e28i)T^{2} \)
53 \( 1 + (-7.99e13 + 1.38e14i)T + (-1.02e29 - 1.77e29i)T^{2} \)
59 \( 1 + (2.66e14 - 4.62e14i)T + (-6.35e29 - 1.10e30i)T^{2} \)
61 \( 1 + (-6.97e14 - 1.20e15i)T + (-1.12e30 + 1.94e30i)T^{2} \)
67 \( 1 + (-1.11e15 + 1.93e15i)T + (-5.52e30 - 9.56e30i)T^{2} \)
71 \( 1 - 7.46e15T + 2.96e31T^{2} \)
73 \( 1 + (-9.28e14 + 1.60e15i)T + (-2.37e31 - 4.11e31i)T^{2} \)
79 \( 1 + (4.02e15 + 6.96e15i)T + (-9.09e31 + 1.57e32i)T^{2} \)
83 \( 1 - 1.23e15T + 4.21e32T^{2} \)
89 \( 1 + (-7.01e15 - 1.21e16i)T + (-6.89e32 + 1.19e33i)T^{2} \)
97 \( 1 - 1.70e16T + 5.95e33T^{2} \)
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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

−18.43906847625975258971340658443, −17.24155503562357953627224303342, −15.20827553889335337151738442498, −14.91811489156774431383123776946, −11.56779255842339170169735654980, −10.55803532392187115743607679414, −9.658967572609868586197907150347, −6.21987375358359015523511417763, −4.89803256995899444862118891517, −2.36649127538812413929653697093, 0.42430753547731199209974587052, 1.92682081580235896219923778087, 5.38836922815733887920168896871, 7.07067103823664330989999564255, 8.285403816472003129855707019567, 11.32316058814269928125833291331, 12.55646055011136679634712470324, 13.60487668390485033644610255720, 16.57451864948172370570570745542, 17.21646054210461044540982757139

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