Properties

Label 845.4
Modulus $845$
Conductor $845$
Order $78$
Real no
Primitive yes
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([39,1]))
 
pari: [g,chi] = znchar(Mod(4,845))
 

Basic properties

Modulus: \(845\)
Conductor: \(845\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(78\)
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 845.bh

\(\chi_{845}(4,\cdot)\) \(\chi_{845}(49,\cdot)\) \(\chi_{845}(69,\cdot)\) \(\chi_{845}(114,\cdot)\) \(\chi_{845}(134,\cdot)\) \(\chi_{845}(179,\cdot)\) \(\chi_{845}(199,\cdot)\) \(\chi_{845}(244,\cdot)\) \(\chi_{845}(264,\cdot)\) \(\chi_{845}(309,\cdot)\) \(\chi_{845}(329,\cdot)\) \(\chi_{845}(374,\cdot)\) \(\chi_{845}(394,\cdot)\) \(\chi_{845}(439,\cdot)\) \(\chi_{845}(459,\cdot)\) \(\chi_{845}(504,\cdot)\) \(\chi_{845}(524,\cdot)\) \(\chi_{845}(569,\cdot)\) \(\chi_{845}(589,\cdot)\) \(\chi_{845}(634,\cdot)\) \(\chi_{845}(719,\cdot)\) \(\chi_{845}(764,\cdot)\) \(\chi_{845}(784,\cdot)\) \(\chi_{845}(829,\cdot)\)

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 78 polynomial

Values on generators

\((677,171)\) → \((-1,e\left(\frac{1}{78}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(14\)
\( \chi_{ 845 }(4, a) \) \(1\)\(1\)\(e\left(\frac{20}{39}\right)\)\(e\left(\frac{7}{78}\right)\)\(e\left(\frac{1}{39}\right)\)\(e\left(\frac{47}{78}\right)\)\(e\left(\frac{34}{39}\right)\)\(e\left(\frac{7}{13}\right)\)\(e\left(\frac{7}{39}\right)\)\(e\left(\frac{25}{78}\right)\)\(e\left(\frac{3}{26}\right)\)\(e\left(\frac{5}{13}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 845 }(4,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 845 }(4,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 845 }(4,·),\chi_{ 845 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 845 }(4,·)) \;\) at \(\; a,b = \) e.g. 1,2