Properties

Label 1209.818
Modulus $1209$
Conductor $1209$
Order $30$
Real no
Primitive yes
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1209, base_ring=CyclotomicField(30))
 
M = H._module
 
chi = DirichletCharacter(H, M([15,15,19]))
 
pari: [g,chi] = znchar(Mod(818,1209))
 

Basic properties

Modulus: \(1209\)
Conductor: \(1209\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(30\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: yes
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1209.cy

\(\chi_{1209}(272,\cdot)\) \(\chi_{1209}(389,\cdot)\) \(\chi_{1209}(623,\cdot)\) \(\chi_{1209}(662,\cdot)\) \(\chi_{1209}(818,\cdot)\) \(\chi_{1209}(974,\cdot)\) \(\chi_{1209}(1013,\cdot)\) \(\chi_{1209}(1169,\cdot)\)

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: \(\Q(\zeta_{15})\)
Fixed field: Number field defined by a degree 30 polynomial

Values on generators

\((404,652,313)\) → \((-1,-1,e\left(\frac{19}{30}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(4\)\(5\)\(7\)\(8\)\(10\)\(11\)\(14\)\(16\)\(17\)
\( \chi_{ 1209 }(818, a) \) \(1\)\(1\)\(e\left(\frac{1}{5}\right)\)\(e\left(\frac{2}{5}\right)\)\(e\left(\frac{2}{3}\right)\)\(e\left(\frac{7}{30}\right)\)\(e\left(\frac{3}{5}\right)\)\(e\left(\frac{13}{15}\right)\)\(e\left(\frac{17}{30}\right)\)\(e\left(\frac{13}{30}\right)\)\(e\left(\frac{4}{5}\right)\)\(e\left(\frac{14}{15}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1209 }(818,a) \;\) at \(\;a = \) e.g. 2