Properties

Label 2-42-21.2-c2-0-1
Degree $2$
Conductor $42$
Sign $0.507 - 0.861i$
Analytic cond. $1.14441$
Root an. cond. $1.06977$
Motivic weight $2$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (1.22 + 0.707i)2-s + (−1.12 + 2.78i)3-s + (0.999 + 1.73i)4-s + (−0.422 − 0.244i)5-s + (−3.34 + 2.60i)6-s + (4.69 − 5.19i)7-s + 2.82i·8-s + (−6.46 − 6.26i)9-s + (−0.345 − 0.597i)10-s + (13.1 − 7.58i)11-s + (−5.94 + 0.830i)12-s − 17.3·13-s + (9.41 − 3.04i)14-s + (1.15 − 0.900i)15-s + (−2.00 + 3.46i)16-s + (−0.422 + 0.244i)17-s + ⋯
L(s)  = 1  + (0.612 + 0.353i)2-s + (−0.375 + 0.926i)3-s + (0.249 + 0.433i)4-s + (−0.0845 − 0.0488i)5-s + (−0.557 + 0.434i)6-s + (0.670 − 0.742i)7-s + 0.353i·8-s + (−0.718 − 0.695i)9-s + (−0.0345 − 0.0597i)10-s + (1.19 − 0.689i)11-s + (−0.495 + 0.0692i)12-s − 1.33·13-s + (0.672 − 0.217i)14-s + (0.0769 − 0.0600i)15-s + (−0.125 + 0.216i)16-s + (−0.0248 + 0.0143i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.507 - 0.861i)\, \overline{\Lambda}(3-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s+1) \, L(s)\cr =\mathstrut & (0.507 - 0.861i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(42\)    =    \(2 \cdot 3 \cdot 7\)
Sign: $0.507 - 0.861i$
Analytic conductor: \(1.14441\)
Root analytic conductor: \(1.06977\)
Motivic weight: \(2\)
Rational: no
Arithmetic: yes
Character: $\chi_{42} (23, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 42,\ (\ :1),\ 0.507 - 0.861i)\)

Particular Values

\(L(\frac{3}{2})\) \(\approx\) \(1.15325 + 0.659357i\)
\(L(\frac12)\) \(\approx\) \(1.15325 + 0.659357i\)
\(L(2)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-1.22 - 0.707i)T \)
3 \( 1 + (1.12 - 2.78i)T \)
7 \( 1 + (-4.69 + 5.19i)T \)
good5 \( 1 + (0.422 + 0.244i)T + (12.5 + 21.6i)T^{2} \)
11 \( 1 + (-13.1 + 7.58i)T + (60.5 - 104. i)T^{2} \)
13 \( 1 + 17.3T + 169T^{2} \)
17 \( 1 + (0.422 - 0.244i)T + (144.5 - 250. i)T^{2} \)
19 \( 1 + (6.53 - 11.3i)T + (-180.5 - 312. i)T^{2} \)
23 \( 1 + (5.78 + 3.34i)T + (264.5 + 458. i)T^{2} \)
29 \( 1 - 47.3iT - 841T^{2} \)
31 \( 1 + (-14.2 - 24.6i)T + (-480.5 + 832. i)T^{2} \)
37 \( 1 + (-0.5 + 0.866i)T + (-684.5 - 1.18e3i)T^{2} \)
41 \( 1 + 28.3iT - 1.68e3T^{2} \)
43 \( 1 + 2.14T + 1.84e3T^{2} \)
47 \( 1 + (63.7 + 36.7i)T + (1.10e3 + 1.91e3i)T^{2} \)
53 \( 1 + (52.7 - 30.4i)T + (1.40e3 - 2.43e3i)T^{2} \)
59 \( 1 + (-87.4 + 50.4i)T + (1.74e3 - 3.01e3i)T^{2} \)
61 \( 1 + (-17.1 + 29.6i)T + (-1.86e3 - 3.22e3i)T^{2} \)
67 \( 1 + (-49.9 - 86.5i)T + (-2.24e3 + 3.88e3i)T^{2} \)
71 \( 1 - 82.9iT - 5.04e3T^{2} \)
73 \( 1 + (-25.8 - 44.8i)T + (-2.66e3 + 4.61e3i)T^{2} \)
79 \( 1 + (-33.3 + 57.7i)T + (-3.12e3 - 5.40e3i)T^{2} \)
83 \( 1 - 88.7iT - 6.88e3T^{2} \)
89 \( 1 + (-50.6 - 29.2i)T + (3.96e3 + 6.85e3i)T^{2} \)
97 \( 1 - 25.0T + 9.40e3T^{2} \)
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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

−16.06693776296084427255282127388, −14.54050651823651327051485689534, −14.26809426474816761934694851339, −12.31313473899030655222871125201, −11.32457783777955269243351111691, −10.06916878864108101664922999296, −8.456798366678759535000110216796, −6.71414358444992867473273150842, −5.07098090224306135603626642584, −3.83322646708001216848073302714, 2.12843528403547952178587957365, 4.79927998329660573689296949336, 6.32911699900054416417586711327, 7.73429435121119324281430506172, 9.552852705957949517555118063061, 11.48110790909442719022978109686, 11.94273499914336133587184334767, 13.08789388675677944310866447252, 14.40667752393682801401613751621, 15.18949767273521941723914820837

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