Properties

Label 7840.3161
Modulus $7840$
Conductor $784$
Order $84$
Real no
Primitive no
Minimal no
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(7840, base_ring=CyclotomicField(84))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,21,0,32]))
 
pari: [g,chi] = znchar(Mod(3161,7840))
 

Basic properties

Modulus: \(7840\)
Conductor: \(784\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(84\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{784}(613,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 7840.ho

\(\chi_{7840}(121,\cdot)\) \(\chi_{7840}(681,\cdot)\) \(\chi_{7840}(921,\cdot)\) \(\chi_{7840}(1241,\cdot)\) \(\chi_{7840}(1481,\cdot)\) \(\chi_{7840}(1801,\cdot)\) \(\chi_{7840}(2041,\cdot)\) \(\chi_{7840}(2361,\cdot)\) \(\chi_{7840}(2601,\cdot)\) \(\chi_{7840}(3161,\cdot)\) \(\chi_{7840}(3481,\cdot)\) \(\chi_{7840}(3721,\cdot)\) \(\chi_{7840}(4041,\cdot)\) \(\chi_{7840}(4601,\cdot)\) \(\chi_{7840}(4841,\cdot)\) \(\chi_{7840}(5161,\cdot)\) \(\chi_{7840}(5401,\cdot)\) \(\chi_{7840}(5721,\cdot)\) \(\chi_{7840}(5961,\cdot)\) \(\chi_{7840}(6281,\cdot)\) \(\chi_{7840}(6521,\cdot)\) \(\chi_{7840}(7081,\cdot)\) \(\chi_{7840}(7401,\cdot)\) \(\chi_{7840}(7641,\cdot)\)

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: $\Q(\zeta_{84})$
Fixed field: Number field defined by a degree 84 polynomial

Values on generators

\((1471,4901,3137,3041)\) → \((1,i,1,e\left(\frac{8}{21}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(9\)\(11\)\(13\)\(17\)\(19\)\(23\)\(27\)\(29\)\(31\)
\( \chi_{ 7840 }(3161, a) \) \(1\)\(1\)\(e\left(\frac{11}{84}\right)\)\(e\left(\frac{11}{42}\right)\)\(e\left(\frac{41}{84}\right)\)\(e\left(\frac{9}{28}\right)\)\(e\left(\frac{11}{21}\right)\)\(e\left(\frac{1}{12}\right)\)\(e\left(\frac{41}{42}\right)\)\(e\left(\frac{11}{28}\right)\)\(e\left(\frac{17}{28}\right)\)\(e\left(\frac{2}{3}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 7840 }(3161,a) \;\) at \(\;a = \) e.g. 2