Properties

Label 418.5
Modulus $418$
Conductor $209$
Order $45$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(418, base_ring=CyclotomicField(90))
 
M = H._module
 
chi = DirichletCharacter(H, M([36,80]))
 
pari: [g,chi] = znchar(Mod(5,418))
 

Basic properties

Modulus: \(418\)
Conductor: \(209\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(45\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{209}(5,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 418.u

\(\chi_{418}(5,\cdot)\) \(\chi_{418}(9,\cdot)\) \(\chi_{418}(25,\cdot)\) \(\chi_{418}(47,\cdot)\) \(\chi_{418}(81,\cdot)\) \(\chi_{418}(93,\cdot)\) \(\chi_{418}(119,\cdot)\) \(\chi_{418}(137,\cdot)\) \(\chi_{418}(157,\cdot)\) \(\chi_{418}(169,\cdot)\) \(\chi_{418}(207,\cdot)\) \(\chi_{418}(213,\cdot)\) \(\chi_{418}(225,\cdot)\) \(\chi_{418}(245,\cdot)\) \(\chi_{418}(251,\cdot)\) \(\chi_{418}(289,\cdot)\) \(\chi_{418}(291,\cdot)\) \(\chi_{418}(301,\cdot)\) \(\chi_{418}(313,\cdot)\) \(\chi_{418}(339,\cdot)\) \(\chi_{418}(367,\cdot)\) \(\chi_{418}(377,\cdot)\) \(\chi_{418}(389,\cdot)\) \(\chi_{418}(405,\cdot)\)

sage: chi.galois_orbit()
 
order = charorder(g,chi)
 
[ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]
 

Related number fields

Field of values: $\Q(\zeta_{45})$
Fixed field: 45.45.43679806300610465846484971330073185012597520004657724600953543350870941304329239684756561.1

Values on generators

\((343,287)\) → \((e\left(\frac{2}{5}\right),e\left(\frac{8}{9}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(7\)\(9\)\(13\)\(15\)\(17\)\(21\)\(23\)\(25\)
\( \chi_{ 418 }(5, a) \) \(1\)\(1\)\(e\left(\frac{34}{45}\right)\)\(e\left(\frac{37}{45}\right)\)\(e\left(\frac{2}{15}\right)\)\(e\left(\frac{23}{45}\right)\)\(e\left(\frac{38}{45}\right)\)\(e\left(\frac{26}{45}\right)\)\(e\left(\frac{22}{45}\right)\)\(e\left(\frac{8}{9}\right)\)\(e\left(\frac{7}{9}\right)\)\(e\left(\frac{29}{45}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 418 }(5,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 418 }(5,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 418 }(5,·),\chi_{ 418 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 418 }(5,·)) \;\) at \(\; a,b = \) e.g. 1,2