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Properties

Label 2-240-15.2-c1-0-7
Degree $2$
Conductor $240$
Sign $0.865 + 0.501i$
Analytic cond. $1.91640$
Root an. cond. $1.38434$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (1.70 − 0.292i)3-s + (2.12 − 0.707i)5-s + (−3 − 3i)7-s + (2.82 − i)9-s + 1.41i·11-s + (3.41 − 1.82i)15-s + (−4.24 + 4.24i)17-s + 4i·19-s + (−5.99 − 4.24i)21-s + (2.82 + 2.82i)23-s + (3.99 − 3i)25-s + (4.53 − 2.53i)27-s − 1.41·29-s + 2·31-s + (0.414 + 2.41i)33-s + ⋯
L(s)  = 1  + (0.985 − 0.169i)3-s + (0.948 − 0.316i)5-s + (−1.13 − 1.13i)7-s + (0.942 − 0.333i)9-s + 0.426i·11-s + (0.881 − 0.472i)15-s + (−1.02 + 1.02i)17-s + 0.917i·19-s + (−1.30 − 0.925i)21-s + (0.589 + 0.589i)23-s + (0.799 − 0.600i)25-s + (0.872 − 0.487i)27-s − 0.262·29-s + 0.359·31-s + (0.0721 + 0.420i)33-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 240 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.865 + 0.501i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 240 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.865 + 0.501i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(240\)    =    \(2^{4} \cdot 3 \cdot 5\)
Sign: $0.865 + 0.501i$
Analytic conductor: \(1.91640\)
Root analytic conductor: \(1.38434\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{240} (17, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 240,\ (\ :1/2),\ 0.865 + 0.501i)\)

Particular Values

\(L(1)\) \(\approx\) \(1.66773 - 0.448614i\)
\(L(\frac12)\) \(\approx\) \(1.66773 - 0.448614i\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 + (-1.70 + 0.292i)T \)
5 \( 1 + (-2.12 + 0.707i)T \)
good7 \( 1 + (3 + 3i)T + 7iT^{2} \)
11 \( 1 - 1.41iT - 11T^{2} \)
13 \( 1 - 13iT^{2} \)
17 \( 1 + (4.24 - 4.24i)T - 17iT^{2} \)
19 \( 1 - 4iT - 19T^{2} \)
23 \( 1 + (-2.82 - 2.82i)T + 23iT^{2} \)
29 \( 1 + 1.41T + 29T^{2} \)
31 \( 1 - 2T + 31T^{2} \)
37 \( 1 + (2 + 2i)T + 37iT^{2} \)
41 \( 1 - 5.65iT - 41T^{2} \)
43 \( 1 + (-2 + 2i)T - 43iT^{2} \)
47 \( 1 + (5.65 - 5.65i)T - 47iT^{2} \)
53 \( 1 + (8.48 + 8.48i)T + 53iT^{2} \)
59 \( 1 - 1.41T + 59T^{2} \)
61 \( 1 + 6T + 61T^{2} \)
67 \( 1 + (4 + 4i)T + 67iT^{2} \)
71 \( 1 + 2.82iT - 71T^{2} \)
73 \( 1 + (-3 + 3i)T - 73iT^{2} \)
79 \( 1 - 10iT - 79T^{2} \)
83 \( 1 + (2.82 + 2.82i)T + 83iT^{2} \)
89 \( 1 - 2.82T + 89T^{2} \)
97 \( 1 + (13 + 13i)T + 97iT^{2} \)
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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

−12.59710427499636671655077438769, −10.74810297217631204133332319594, −9.892296582830355028533161067276, −9.339410583234397489483062715837, −8.176809062897239988305952638596, −7.00364859946765129234684234254, −6.20464122240049289740984145059, −4.42428302669888849318001803689, −3.27778388909946455808643958243, −1.68927163085168541664644051961, 2.40211433567042417417539153740, 3.09196850208470991893785978549, 4.92376647355467233231507017008, 6.24738053258380440352583941239, 7.08611664775820312848205456849, 8.787150936026752713198893442427, 9.152119062834680031547838752112, 9.995887036803470859565591839400, 11.11927672544818574050156177964, 12.49725180053172871156787694619

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