Properties

Label 1617.23
Modulus $1617$
Conductor $147$
Order $42$
Real no
Primitive no
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1617, base_ring=CyclotomicField(42))
 
M = H._module
 
chi = DirichletCharacter(H, M([21,38,0]))
 
pari: [g,chi] = znchar(Mod(23,1617))
 

Basic properties

Modulus: \(1617\)
Conductor: \(147\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(42\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{147}(23,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1617.bq

\(\chi_{1617}(23,\cdot)\) \(\chi_{1617}(221,\cdot)\) \(\chi_{1617}(254,\cdot)\) \(\chi_{1617}(452,\cdot)\) \(\chi_{1617}(485,\cdot)\) \(\chi_{1617}(683,\cdot)\) \(\chi_{1617}(914,\cdot)\) \(\chi_{1617}(947,\cdot)\) \(\chi_{1617}(1178,\cdot)\) \(\chi_{1617}(1376,\cdot)\) \(\chi_{1617}(1409,\cdot)\) \(\chi_{1617}(1607,\cdot)\)

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: \(\Q(\zeta_{21})\)
Fixed field: 42.0.176602720807616761537805583365440112858555316650025456145851095351761290003.1

Values on generators

\((1079,199,442)\) → \((-1,e\left(\frac{19}{21}\right),1)\)

First values

\(a\) \(-1\)\(1\)\(2\)\(4\)\(5\)\(8\)\(10\)\(13\)\(16\)\(17\)\(19\)\(20\)
\( \chi_{ 1617 }(23, a) \) \(-1\)\(1\)\(e\left(\frac{1}{42}\right)\)\(e\left(\frac{1}{21}\right)\)\(e\left(\frac{31}{42}\right)\)\(e\left(\frac{1}{14}\right)\)\(e\left(\frac{16}{21}\right)\)\(e\left(\frac{6}{7}\right)\)\(e\left(\frac{2}{21}\right)\)\(e\left(\frac{5}{42}\right)\)\(e\left(\frac{2}{3}\right)\)\(e\left(\frac{11}{14}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1617 }(23,a) \;\) at \(\;a = \) e.g. 2