Properties

Label 7942.21
Modulus $7942$
Conductor $3971$
Order $342$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(7942, base_ring=CyclotomicField(342))
 
M = H._module
 
chi = DirichletCharacter(H, M([171,289]))
 
pari: [g,chi] = znchar(Mod(21,7942))
 

Basic properties

Modulus: \(7942\)
Conductor: \(3971\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(342\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{3971}(21,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 7942.bm

\(\chi_{7942}(21,\cdot)\) \(\chi_{7942}(109,\cdot)\) \(\chi_{7942}(219,\cdot)\) \(\chi_{7942}(241,\cdot)\) \(\chi_{7942}(395,\cdot)\) \(\chi_{7942}(439,\cdot)\) \(\chi_{7942}(527,\cdot)\) \(\chi_{7942}(637,\cdot)\) \(\chi_{7942}(659,\cdot)\) \(\chi_{7942}(725,\cdot)\) \(\chi_{7942}(813,\cdot)\) \(\chi_{7942}(857,\cdot)\) \(\chi_{7942}(945,\cdot)\) \(\chi_{7942}(1077,\cdot)\) \(\chi_{7942}(1143,\cdot)\) \(\chi_{7942}(1231,\cdot)\) \(\chi_{7942}(1275,\cdot)\) \(\chi_{7942}(1363,\cdot)\) \(\chi_{7942}(1473,\cdot)\) \(\chi_{7942}(1495,\cdot)\) \(\chi_{7942}(1561,\cdot)\) \(\chi_{7942}(1649,\cdot)\) \(\chi_{7942}(1693,\cdot)\) \(\chi_{7942}(1781,\cdot)\) \(\chi_{7942}(1891,\cdot)\) \(\chi_{7942}(1913,\cdot)\) \(\chi_{7942}(1979,\cdot)\) \(\chi_{7942}(2111,\cdot)\) \(\chi_{7942}(2199,\cdot)\) \(\chi_{7942}(2309,\cdot)\) ...

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: $\Q(\zeta_{171})$
Fixed field: Number field defined by a degree 342 polynomial (not computed)

Values on generators

\((5777,6139)\) → \((-1,e\left(\frac{289}{342}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(7\)\(9\)\(13\)\(15\)\(17\)\(21\)\(23\)\(25\)
\( \chi_{ 7942 }(21, a) \) \(1\)\(1\)\(e\left(\frac{157}{342}\right)\)\(e\left(\frac{8}{171}\right)\)\(e\left(\frac{29}{114}\right)\)\(e\left(\frac{157}{171}\right)\)\(e\left(\frac{88}{171}\right)\)\(e\left(\frac{173}{342}\right)\)\(e\left(\frac{163}{342}\right)\)\(e\left(\frac{122}{171}\right)\)\(e\left(\frac{64}{171}\right)\)\(e\left(\frac{16}{171}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 7942 }(21,a) \;\) at \(\;a = \) e.g. 2