Properties

Label 2-7e2-1.1-c3-0-3
Degree $2$
Conductor $49$
Sign $1$
Analytic cond. $2.89109$
Root an. cond. $1.70032$
Motivic weight $3$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2·2-s + 7·3-s − 4·4-s + 7·5-s + 14·6-s − 24·8-s + 22·9-s + 14·10-s − 5·11-s − 28·12-s − 14·13-s + 49·15-s − 16·16-s − 21·17-s + 44·18-s + 49·19-s − 28·20-s − 10·22-s − 159·23-s − 168·24-s − 76·25-s − 28·26-s − 35·27-s + 58·29-s + 98·30-s + 147·31-s + 160·32-s + ⋯
L(s)  = 1  + 0.707·2-s + 1.34·3-s − 1/2·4-s + 0.626·5-s + 0.952·6-s − 1.06·8-s + 0.814·9-s + 0.442·10-s − 0.137·11-s − 0.673·12-s − 0.298·13-s + 0.843·15-s − 1/4·16-s − 0.299·17-s + 0.576·18-s + 0.591·19-s − 0.313·20-s − 0.0969·22-s − 1.44·23-s − 1.42·24-s − 0.607·25-s − 0.211·26-s − 0.249·27-s + 0.371·29-s + 0.596·30-s + 0.851·31-s + 0.883·32-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: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 49,\ (\ :3/2),\ 1)\)

Particular Values

\(L(2)\) \(\approx\) \(2.390886848\)
\(L(\frac12)\) \(\approx\) \(2.390886848\)
\(L(\frac{5}{2})\) 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 \( 1 - p T + p^{3} T^{2} \)
3 \( 1 - 7 T + p^{3} T^{2} \)
5 \( 1 - 7 T + p^{3} T^{2} \)
11 \( 1 + 5 T + p^{3} T^{2} \)
13 \( 1 + 14 T + p^{3} T^{2} \)
17 \( 1 + 21 T + p^{3} T^{2} \)
19 \( 1 - 49 T + p^{3} T^{2} \)
23 \( 1 + 159 T + p^{3} T^{2} \)
29 \( 1 - 2 p T + p^{3} T^{2} \)
31 \( 1 - 147 T + p^{3} T^{2} \)
37 \( 1 - 219 T + p^{3} T^{2} \)
41 \( 1 - 350 T + p^{3} T^{2} \)
43 \( 1 + 124 T + p^{3} T^{2} \)
47 \( 1 - 525 T + p^{3} T^{2} \)
53 \( 1 - 303 T + p^{3} T^{2} \)
59 \( 1 + 105 T + p^{3} T^{2} \)
61 \( 1 + 413 T + p^{3} T^{2} \)
67 \( 1 - 415 T + p^{3} T^{2} \)
71 \( 1 + 432 T + p^{3} T^{2} \)
73 \( 1 + 1113 T + p^{3} T^{2} \)
79 \( 1 + 103 T + p^{3} T^{2} \)
83 \( 1 - 1092 T + p^{3} T^{2} \)
89 \( 1 + 329 T + p^{3} T^{2} \)
97 \( 1 + 882 T + p^{3} T^{2} \)
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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

−14.68447904566897067888251587450, −13.89379437689757805272402139696, −13.35210591306229856302787244728, −12.04524431350386440480766747871, −9.956700498496216152374194020817, −9.081128828554019901079226274108, −7.88020952428472354361192733429, −5.87022928504861244158896323521, −4.15835225881826945348313234525, −2.61045824242721581282890795060, 2.61045824242721581282890795060, 4.15835225881826945348313234525, 5.87022928504861244158896323521, 7.88020952428472354361192733429, 9.081128828554019901079226274108, 9.956700498496216152374194020817, 12.04524431350386440480766747871, 13.35210591306229856302787244728, 13.89379437689757805272402139696, 14.68447904566897067888251587450

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