Properties

Label 1805.42
Modulus $1805$
Conductor $1805$
Order $684$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1805, base_ring=CyclotomicField(684))
 
M = H._module
 
chi = DirichletCharacter(H, M([171,580]))
 
pari: [g,chi] = znchar(Mod(42,1805))
 

Basic properties

Modulus: \(1805\)
Conductor: \(1805\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(684\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: yes
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1805.bj

\(\chi_{1805}(17,\cdot)\) \(\chi_{1805}(23,\cdot)\) \(\chi_{1805}(42,\cdot)\) \(\chi_{1805}(43,\cdot)\) \(\chi_{1805}(47,\cdot)\) \(\chi_{1805}(63,\cdot)\) \(\chi_{1805}(73,\cdot)\) \(\chi_{1805}(82,\cdot)\) \(\chi_{1805}(92,\cdot)\) \(\chi_{1805}(93,\cdot)\) \(\chi_{1805}(112,\cdot)\) \(\chi_{1805}(118,\cdot)\) \(\chi_{1805}(123,\cdot)\) \(\chi_{1805}(137,\cdot)\) \(\chi_{1805}(138,\cdot)\) \(\chi_{1805}(142,\cdot)\) \(\chi_{1805}(157,\cdot)\) \(\chi_{1805}(158,\cdot)\) \(\chi_{1805}(168,\cdot)\) \(\chi_{1805}(177,\cdot)\) \(\chi_{1805}(187,\cdot)\) \(\chi_{1805}(188,\cdot)\) \(\chi_{1805}(207,\cdot)\) \(\chi_{1805}(213,\cdot)\) \(\chi_{1805}(218,\cdot)\) \(\chi_{1805}(232,\cdot)\) \(\chi_{1805}(233,\cdot)\) \(\chi_{1805}(237,\cdot)\) \(\chi_{1805}(252,\cdot)\) \(\chi_{1805}(253,\cdot)\) ...

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: $\Q(\zeta_{684})$
Fixed field: Number field defined by a degree 684 polynomial (not computed)

Values on generators

\((362,1446)\) → \((i,e\left(\frac{145}{171}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 1805 }(42, a) \) \(-1\)\(1\)\(e\left(\frac{67}{684}\right)\)\(e\left(\frac{421}{684}\right)\)\(e\left(\frac{67}{342}\right)\)\(e\left(\frac{122}{171}\right)\)\(e\left(\frac{101}{228}\right)\)\(e\left(\frac{67}{228}\right)\)\(e\left(\frac{79}{342}\right)\)\(e\left(\frac{28}{57}\right)\)\(e\left(\frac{185}{228}\right)\)\(e\left(\frac{497}{684}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1805 }(42,a) \;\) at \(\;a = \) e.g. 2