Properties

Label 2-7e2-1.1-c3-0-5
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  + 4.53·2-s + 3.57·3-s + 12.5·4-s − 13.4·5-s + 16.2·6-s + 20.5·8-s − 14.1·9-s − 61.0·10-s + 0.813·11-s + 44.8·12-s + 34.9·13-s − 48.2·15-s − 7.21·16-s + 117.·17-s − 64.2·18-s − 93.2·19-s − 168.·20-s + 3.68·22-s + 120.·23-s + 73.4·24-s + 56.6·25-s + 158.·26-s − 147.·27-s + 8.56·29-s − 218.·30-s − 82.1·31-s − 196.·32-s + ⋯
L(s)  = 1  + 1.60·2-s + 0.688·3-s + 1.56·4-s − 1.20·5-s + 1.10·6-s + 0.907·8-s − 0.525·9-s − 1.93·10-s + 0.0222·11-s + 1.07·12-s + 0.745·13-s − 0.830·15-s − 0.112·16-s + 1.67·17-s − 0.841·18-s − 1.12·19-s − 1.88·20-s + 0.0357·22-s + 1.09·23-s + 0.625·24-s + 0.453·25-s + 1.19·26-s − 1.05·27-s + 0.0548·29-s − 1.33·30-s − 0.475·31-s − 1.08·32-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

\(L(2)\) \(\approx\) \(2.957252836\)
\(L(\frac12)\) \(\approx\) \(2.957252836\)
\(L(\frac{5}{2})\) 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 \( 1 - 4.53T + 8T^{2} \)
3 \( 1 - 3.57T + 27T^{2} \)
5 \( 1 + 13.4T + 125T^{2} \)
11 \( 1 - 0.813T + 1.33e3T^{2} \)
13 \( 1 - 34.9T + 2.19e3T^{2} \)
17 \( 1 - 117.T + 4.91e3T^{2} \)
19 \( 1 + 93.2T + 6.85e3T^{2} \)
23 \( 1 - 120.T + 1.21e4T^{2} \)
29 \( 1 - 8.56T + 2.43e4T^{2} \)
31 \( 1 + 82.1T + 2.97e4T^{2} \)
37 \( 1 - 28.8T + 5.06e4T^{2} \)
41 \( 1 + 70.5T + 6.89e4T^{2} \)
43 \( 1 - 417.T + 7.95e4T^{2} \)
47 \( 1 - 338.T + 1.03e5T^{2} \)
53 \( 1 - 149.T + 1.48e5T^{2} \)
59 \( 1 + 94.1T + 2.05e5T^{2} \)
61 \( 1 + 120.T + 2.26e5T^{2} \)
67 \( 1 + 792.T + 3.00e5T^{2} \)
71 \( 1 - 449.T + 3.57e5T^{2} \)
73 \( 1 + 469.T + 3.89e5T^{2} \)
79 \( 1 + 1.01e3T + 4.93e5T^{2} \)
83 \( 1 + 104.T + 5.71e5T^{2} \)
89 \( 1 + 1.57e3T + 7.04e5T^{2} \)
97 \( 1 - 550.T + 9.12e5T^{2} \)
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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

−14.85709300458867572323408325636, −14.11934434124373552550574324532, −12.92233742036783344927795430096, −11.95469959029108008654121383700, −10.95577004290309420428988011852, −8.742629377184811453903417643264, −7.46755154542505827323762836077, −5.77036537804287203175257888116, −4.09533863556181174331652822198, −3.07853439106705805267098237945, 3.07853439106705805267098237945, 4.09533863556181174331652822198, 5.77036537804287203175257888116, 7.46755154542505827323762836077, 8.742629377184811453903417643264, 10.95577004290309420428988011852, 11.95469959029108008654121383700, 12.92233742036783344927795430096, 14.11934434124373552550574324532, 14.85709300458867572323408325636

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