Properties

Label 845.16
Modulus $845$
Conductor $169$
Order $39$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(845, base_ring=CyclotomicField(78))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,2]))
 
pari: [g,chi] = znchar(Mod(16,845))
 

Basic properties

Modulus: \(845\)
Conductor: \(169\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(39\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{169}(16,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 845.y

\(\chi_{845}(16,\cdot)\) \(\chi_{845}(61,\cdot)\) \(\chi_{845}(81,\cdot)\) \(\chi_{845}(126,\cdot)\) \(\chi_{845}(211,\cdot)\) \(\chi_{845}(256,\cdot)\) \(\chi_{845}(276,\cdot)\) \(\chi_{845}(321,\cdot)\) \(\chi_{845}(341,\cdot)\) \(\chi_{845}(386,\cdot)\) \(\chi_{845}(406,\cdot)\) \(\chi_{845}(451,\cdot)\) \(\chi_{845}(471,\cdot)\) \(\chi_{845}(516,\cdot)\) \(\chi_{845}(536,\cdot)\) \(\chi_{845}(581,\cdot)\) \(\chi_{845}(601,\cdot)\) \(\chi_{845}(646,\cdot)\) \(\chi_{845}(666,\cdot)\) \(\chi_{845}(711,\cdot)\) \(\chi_{845}(731,\cdot)\) \(\chi_{845}(776,\cdot)\) \(\chi_{845}(796,\cdot)\) \(\chi_{845}(841,\cdot)\)

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: $\Q(\zeta_{39})$
Fixed field: Number field defined by a degree 39 polynomial

Values on generators

\((677,171)\) → \((1,e\left(\frac{1}{39}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(14\)
\( \chi_{ 845 }(16, a) \) \(1\)\(1\)\(e\left(\frac{1}{39}\right)\)\(e\left(\frac{7}{39}\right)\)\(e\left(\frac{2}{39}\right)\)\(e\left(\frac{8}{39}\right)\)\(e\left(\frac{29}{39}\right)\)\(e\left(\frac{1}{13}\right)\)\(e\left(\frac{14}{39}\right)\)\(e\left(\frac{25}{39}\right)\)\(e\left(\frac{3}{13}\right)\)\(e\left(\frac{10}{13}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 845 }(16,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 845 }(16,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 845 }(16,·),\chi_{ 845 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 845 }(16,·)) \;\) at \(\; a,b = \) e.g. 1,2