Properties

Label 1805.21
Modulus $1805$
Conductor $361$
Order $342$
Real no
Primitive no
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1805, base_ring=CyclotomicField(342))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,289]))
 
pari: [g,chi] = znchar(Mod(21,1805))
 

Basic properties

Modulus: \(1805\)
Conductor: \(361\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(342\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{361}(21,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1805.bh

\(\chi_{1805}(21,\cdot)\) \(\chi_{1805}(41,\cdot)\) \(\chi_{1805}(51,\cdot)\) \(\chi_{1805}(71,\cdot)\) \(\chi_{1805}(86,\cdot)\) \(\chi_{1805}(91,\cdot)\) \(\chi_{1805}(136,\cdot)\) \(\chi_{1805}(146,\cdot)\) \(\chi_{1805}(166,\cdot)\) \(\chi_{1805}(181,\cdot)\) \(\chi_{1805}(186,\cdot)\) \(\chi_{1805}(211,\cdot)\) \(\chi_{1805}(231,\cdot)\) \(\chi_{1805}(241,\cdot)\) \(\chi_{1805}(261,\cdot)\) \(\chi_{1805}(276,\cdot)\) \(\chi_{1805}(281,\cdot)\) \(\chi_{1805}(306,\cdot)\) \(\chi_{1805}(326,\cdot)\) \(\chi_{1805}(336,\cdot)\) \(\chi_{1805}(356,\cdot)\) \(\chi_{1805}(371,\cdot)\) \(\chi_{1805}(376,\cdot)\) \(\chi_{1805}(401,\cdot)\) \(\chi_{1805}(421,\cdot)\) \(\chi_{1805}(431,\cdot)\) \(\chi_{1805}(451,\cdot)\) \(\chi_{1805}(466,\cdot)\) \(\chi_{1805}(471,\cdot)\) \(\chi_{1805}(496,\cdot)\) ...

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

\((362,1446)\) → \((1,e\left(\frac{289}{342}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 1805 }(21, a) \) \(-1\)\(1\)\(e\left(\frac{289}{342}\right)\)\(e\left(\frac{157}{342}\right)\)\(e\left(\frac{118}{171}\right)\)\(e\left(\frac{52}{171}\right)\)\(e\left(\frac{43}{57}\right)\)\(e\left(\frac{61}{114}\right)\)\(e\left(\frac{157}{171}\right)\)\(e\left(\frac{11}{57}\right)\)\(e\left(\frac{17}{114}\right)\)\(e\left(\frac{5}{342}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1805 }(21,a) \;\) at \(\;a = \) e.g. 2