Properties

Label 2365.173
Modulus $2365$
Conductor $55$
Order $20$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2365, base_ring=CyclotomicField(20))
 
M = H._module
 
chi = DirichletCharacter(H, M([15,6,0]))
 
pari: [g,chi] = znchar(Mod(173,2365))
 

Basic properties

Modulus: \(2365\)
Conductor: \(55\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(20\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{55}(8,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2365.br

\(\chi_{2365}(173,\cdot)\) \(\chi_{2365}(732,\cdot)\) \(\chi_{2365}(1162,\cdot)\) \(\chi_{2365}(1377,\cdot)\) \(\chi_{2365}(1592,\cdot)\) \(\chi_{2365}(1678,\cdot)\) \(\chi_{2365}(2108,\cdot)\) \(\chi_{2365}(2323,\cdot)\)

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: \(\Q(\zeta_{20})\)
Fixed field: \(\Q(\zeta_{55})^+\)

Values on generators

\((947,431,1981)\) → \((-i,e\left(\frac{3}{10}\right),1)\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(12\)\(13\)\(14\)
\( \chi_{ 2365 }(173, a) \) \(1\)\(1\)\(e\left(\frac{1}{20}\right)\)\(e\left(\frac{13}{20}\right)\)\(e\left(\frac{1}{10}\right)\)\(e\left(\frac{7}{10}\right)\)\(e\left(\frac{17}{20}\right)\)\(e\left(\frac{3}{20}\right)\)\(e\left(\frac{3}{10}\right)\)\(-i\)\(e\left(\frac{11}{20}\right)\)\(e\left(\frac{9}{10}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2365 }(173,a) \;\) at \(\;a = \) e.g. 2