Properties

Label 1815.2
Modulus $1815$
Conductor $1815$
Order $220$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1815, base_ring=CyclotomicField(220))
 
M = H._module
 
chi = DirichletCharacter(H, M([110,55,2]))
 
pari: [g,chi] = znchar(Mod(2,1815))
 

Basic properties

Modulus: \(1815\)
Conductor: \(1815\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(220\)
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 1815.bv

\(\chi_{1815}(2,\cdot)\) \(\chi_{1815}(8,\cdot)\) \(\chi_{1815}(17,\cdot)\) \(\chi_{1815}(62,\cdot)\) \(\chi_{1815}(68,\cdot)\) \(\chi_{1815}(83,\cdot)\) \(\chi_{1815}(107,\cdot)\) \(\chi_{1815}(128,\cdot)\) \(\chi_{1815}(167,\cdot)\) \(\chi_{1815}(173,\cdot)\) \(\chi_{1815}(182,\cdot)\) \(\chi_{1815}(227,\cdot)\) \(\chi_{1815}(248,\cdot)\) \(\chi_{1815}(272,\cdot)\) \(\chi_{1815}(293,\cdot)\) \(\chi_{1815}(332,\cdot)\) \(\chi_{1815}(338,\cdot)\) \(\chi_{1815}(347,\cdot)\) \(\chi_{1815}(392,\cdot)\) \(\chi_{1815}(398,\cdot)\) \(\chi_{1815}(413,\cdot)\) \(\chi_{1815}(437,\cdot)\) \(\chi_{1815}(458,\cdot)\) \(\chi_{1815}(497,\cdot)\) \(\chi_{1815}(503,\cdot)\) \(\chi_{1815}(512,\cdot)\) \(\chi_{1815}(557,\cdot)\) \(\chi_{1815}(563,\cdot)\) \(\chi_{1815}(623,\cdot)\) \(\chi_{1815}(662,\cdot)\) ...

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: $\Q(\zeta_{220})$
Fixed field: Number field defined by a degree 220 polynomial (not computed)

Values on generators

\((1211,727,1696)\) → \((-1,i,e\left(\frac{1}{110}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(4\)\(7\)\(8\)\(13\)\(14\)\(16\)\(17\)\(19\)\(23\)
\( \chi_{ 1815 }(2, a) \) \(-1\)\(1\)\(e\left(\frac{167}{220}\right)\)\(e\left(\frac{57}{110}\right)\)\(e\left(\frac{69}{220}\right)\)\(e\left(\frac{61}{220}\right)\)\(e\left(\frac{147}{220}\right)\)\(e\left(\frac{4}{55}\right)\)\(e\left(\frac{2}{55}\right)\)\(e\left(\frac{43}{220}\right)\)\(e\left(\frac{14}{55}\right)\)\(e\left(\frac{39}{44}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1815 }(2,a) \;\) at \(\;a = \) e.g. 2