Properties

Label 1312.13
Modulus $1312$
Conductor $1312$
Order $40$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1312, base_ring=CyclotomicField(40))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,35,31]))
 
pari: [g,chi] = znchar(Mod(13,1312))
 

Basic properties

Modulus: \(1312\)
Conductor: \(1312\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(40\)
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 1312.cv

\(\chi_{1312}(13,\cdot)\) \(\chi_{1312}(93,\cdot)\) \(\chi_{1312}(101,\cdot)\) \(\chi_{1312}(117,\cdot)\) \(\chi_{1312}(157,\cdot)\) \(\chi_{1312}(293,\cdot)\) \(\chi_{1312}(309,\cdot)\) \(\chi_{1312}(381,\cdot)\) \(\chi_{1312}(685,\cdot)\) \(\chi_{1312}(805,\cdot)\) \(\chi_{1312}(837,\cdot)\) \(\chi_{1312}(885,\cdot)\) \(\chi_{1312}(909,\cdot)\) \(\chi_{1312}(917,\cdot)\) \(\chi_{1312}(973,\cdot)\) \(\chi_{1312}(1053,\cdot)\)

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: \(\Q(\zeta_{40})\)
Fixed field: Number field defined by a degree 40 polynomial

Values on generators

\((575,165,129)\) → \((1,e\left(\frac{7}{8}\right),e\left(\frac{31}{40}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(7\)\(9\)\(11\)\(13\)\(15\)\(17\)\(19\)\(21\)
\( \chi_{ 1312 }(13, a) \) \(-1\)\(1\)\(i\)\(e\left(\frac{37}{40}\right)\)\(e\left(\frac{39}{40}\right)\)\(-1\)\(e\left(\frac{7}{10}\right)\)\(e\left(\frac{3}{20}\right)\)\(e\left(\frac{7}{40}\right)\)\(e\left(\frac{3}{40}\right)\)\(e\left(\frac{1}{10}\right)\)\(e\left(\frac{9}{40}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1312 }(13,a) \;\) at \(\;a = \) e.g. 2