Properties

Label 2-7e2-1.1-c3-0-0
Degree $2$
Conductor $49$
Sign $1$
Analytic cond. $2.89109$
Root an. cond. $1.70032$
Motivic weight $3$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 3.53·2-s − 7.82·3-s + 4.46·4-s − 2.07·5-s + 27.6·6-s + 12.4·8-s + 34.1·9-s + 7.33·10-s + 49.1·11-s − 34.9·12-s − 44.8·13-s + 16.2·15-s − 79.7·16-s + 26.5·17-s − 120.·18-s + 77.7·19-s − 9.28·20-s − 173.·22-s + 55.7·23-s − 97.5·24-s − 120.·25-s + 158.·26-s − 56.2·27-s + 121.·29-s − 57.3·30-s + 305.·31-s + 181.·32-s + ⋯
L(s)  = 1  − 1.24·2-s − 1.50·3-s + 0.558·4-s − 0.185·5-s + 1.87·6-s + 0.551·8-s + 1.26·9-s + 0.231·10-s + 1.34·11-s − 0.840·12-s − 0.956·13-s + 0.279·15-s − 1.24·16-s + 0.378·17-s − 1.58·18-s + 0.938·19-s − 0.103·20-s − 1.68·22-s + 0.505·23-s − 0.829·24-s − 0.965·25-s + 1.19·26-s − 0.400·27-s + 0.777·29-s − 0.349·30-s + 1.77·31-s + 1.00·32-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 49 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 49 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(49\)    =    \(7^{2}\)
Sign: $1$
Analytic conductor: \(2.89109\)
Root analytic conductor: \(1.70032\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 49,\ (\ :3/2),\ 1)\)

Particular Values

\(L(2)\) \(\approx\) \(0.4031607051\)
\(L(\frac12)\) \(\approx\) \(0.4031607051\)
\(L(\frac{5}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 \)
good2 \( 1 + 3.53T + 8T^{2} \)
3 \( 1 + 7.82T + 27T^{2} \)
5 \( 1 + 2.07T + 125T^{2} \)
11 \( 1 - 49.1T + 1.33e3T^{2} \)
13 \( 1 + 44.8T + 2.19e3T^{2} \)
17 \( 1 - 26.5T + 4.91e3T^{2} \)
19 \( 1 - 77.7T + 6.85e3T^{2} \)
23 \( 1 - 55.7T + 1.21e4T^{2} \)
29 \( 1 - 121.T + 2.43e4T^{2} \)
31 \( 1 - 305.T + 2.97e4T^{2} \)
37 \( 1 - 77.1T + 5.06e4T^{2} \)
41 \( 1 - 248.T + 6.89e4T^{2} \)
43 \( 1 + 147.T + 7.95e4T^{2} \)
47 \( 1 - 269.T + 1.03e5T^{2} \)
53 \( 1 + 141.T + 1.48e5T^{2} \)
59 \( 1 + 424.T + 2.05e5T^{2} \)
61 \( 1 + 587.T + 2.26e5T^{2} \)
67 \( 1 + 179.T + 3.00e5T^{2} \)
71 \( 1 - 674.T + 3.57e5T^{2} \)
73 \( 1 - 237.T + 3.89e5T^{2} \)
79 \( 1 - 495.T + 4.93e5T^{2} \)
83 \( 1 + 24.4T + 5.71e5T^{2} \)
89 \( 1 - 1.07e3T + 7.04e5T^{2} \)
97 \( 1 - 1.66e3T + 9.12e5T^{2} \)
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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

−15.68669713416454609552086092983, −13.99294785824218850681192144988, −12.16931313324275024383024928713, −11.50655608047075882804097382656, −10.26760446400522511369056728052, −9.326144726423956130721730438880, −7.64099400864568382924892399128, −6.39820875894027246898174258689, −4.70001391395699142531083415200, −0.899811362693603773500375190422, 0.899811362693603773500375190422, 4.70001391395699142531083415200, 6.39820875894027246898174258689, 7.64099400864568382924892399128, 9.326144726423956130721730438880, 10.26760446400522511369056728052, 11.50655608047075882804097382656, 12.16931313324275024383024928713, 13.99294785824218850681192144988, 15.68669713416454609552086092983

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