Properties

Label 2-7e2-1.1-c3-0-1
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

\(L(2)\) \(\approx\) \(1.202885298\)
\(L(\frac12)\) \(\approx\) \(1.202885298\)
\(L(\frac{5}{2})\) 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

−15.07934209573163466305004421863, −14.06138937785742708015713732426, −13.13666103958812530191013531636, −11.20257819491876418713911258748, −9.785279242392445464368840220259, −8.914017700696482534327261248755, −8.266133180865503445888015742762, −6.80570825296225348670572440666, −3.88051164760932429373629828840, −1.75457033817401880998895302335, 1.75457033817401880998895302335, 3.88051164760932429373629828840, 6.80570825296225348670572440666, 8.266133180865503445888015742762, 8.914017700696482534327261248755, 9.785279242392445464368840220259, 11.20257819491876418713911258748, 13.13666103958812530191013531636, 14.06138937785742708015713732426, 15.07934209573163466305004421863

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