Properties

Label 2-7e2-1.1-c5-0-0
Degree $2$
Conductor $49$
Sign $1$
Analytic cond. $7.85880$
Root an. cond. $2.80335$
Motivic weight $5$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 2·2-s − 24.9·3-s − 28·4-s − 74.9·5-s + 49.9·6-s + 120·8-s + 381·9-s + 149.·10-s − 284·11-s + 699.·12-s − 524.·13-s + 1.87e3·15-s + 656·16-s + 149.·17-s − 762·18-s − 2.17e3·19-s + 2.09e3·20-s + 568·22-s + 1.49e3·23-s − 2.99e3·24-s + 2.49e3·25-s + 1.04e3·26-s − 3.44e3·27-s − 4.36e3·29-s − 3.74e3·30-s + 6.44e3·31-s − 5.15e3·32-s + ⋯
L(s)  = 1  − 0.353·2-s − 1.60·3-s − 0.875·4-s − 1.34·5-s + 0.566·6-s + 0.662·8-s + 1.56·9-s + 0.473·10-s − 0.707·11-s + 1.40·12-s − 0.860·13-s + 2.14·15-s + 0.640·16-s + 0.125·17-s − 0.554·18-s − 1.38·19-s + 1.17·20-s + 0.250·22-s + 0.589·23-s − 1.06·24-s + 0.797·25-s + 0.304·26-s − 0.910·27-s − 0.964·29-s − 0.759·30-s + 1.20·31-s − 0.889·32-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 49 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(6-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 49 ^{s/2} \, \Gamma_{\C}(s+5/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(49\)    =    \(7^{2}\)
Sign: $1$
Analytic conductor: \(7.85880\)
Root analytic conductor: \(2.80335\)
Motivic weight: \(5\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 49,\ (\ :5/2),\ 1)\)

Particular Values

\(L(3)\) \(\approx\) \(0.1878649763\)
\(L(\frac12)\) \(\approx\) \(0.1878649763\)
\(L(\frac{7}{2})\) 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 \( 1 + 2T + 32T^{2} \)
3 \( 1 + 24.9T + 243T^{2} \)
5 \( 1 + 74.9T + 3.12e3T^{2} \)
11 \( 1 + 284T + 1.61e5T^{2} \)
13 \( 1 + 524.T + 3.71e5T^{2} \)
17 \( 1 - 149.T + 1.41e6T^{2} \)
19 \( 1 + 2.17e3T + 2.47e6T^{2} \)
23 \( 1 - 1.49e3T + 6.43e6T^{2} \)
29 \( 1 + 4.36e3T + 2.05e7T^{2} \)
31 \( 1 - 6.44e3T + 2.86e7T^{2} \)
37 \( 1 + 1.26e4T + 6.93e7T^{2} \)
41 \( 1 - 9.44e3T + 1.15e8T^{2} \)
43 \( 1 + 1.35e3T + 1.47e8T^{2} \)
47 \( 1 + 1.00e4T + 2.29e8T^{2} \)
53 \( 1 - 1.41e4T + 4.18e8T^{2} \)
59 \( 1 - 3.73e4T + 7.14e8T^{2} \)
61 \( 1 - 3.55e4T + 8.44e8T^{2} \)
67 \( 1 + 3.64e3T + 1.35e9T^{2} \)
71 \( 1 - 3.56e4T + 1.80e9T^{2} \)
73 \( 1 + 4.07e4T + 2.07e9T^{2} \)
79 \( 1 + 5.46e4T + 3.07e9T^{2} \)
83 \( 1 - 524.T + 3.93e9T^{2} \)
89 \( 1 - 2.03e4T + 5.58e9T^{2} \)
97 \( 1 + 1.83e5T + 8.58e9T^{2} \)
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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

−14.87666734531662154492780887845, −13.00774088918867840392777419336, −12.16452426120625643001517762712, −11.07654606259343191825190591051, −10.11000278058710878791113209938, −8.350377717238574837784015840520, −7.10458692726977830579516010790, −5.27889276202149891284105192365, −4.23966316132992123864667505701, −0.40630917411279454399531091558, 0.40630917411279454399531091558, 4.23966316132992123864667505701, 5.27889276202149891284105192365, 7.10458692726977830579516010790, 8.350377717238574837784015840520, 10.11000278058710878791113209938, 11.07654606259343191825190591051, 12.16452426120625643001517762712, 13.00774088918867840392777419336, 14.87666734531662154492780887845

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