Properties

Label 8005.21
Modulus $8005$
Conductor $1601$
Order $400$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(8005, base_ring=CyclotomicField(400))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,147]))
 
pari: [g,chi] = znchar(Mod(21,8005))
 

Basic properties

Modulus: \(8005\)
Conductor: \(1601\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(400\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{1601}(21,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 8005.cp

\(\chi_{8005}(21,\cdot)\) \(\chi_{8005}(51,\cdot)\) \(\chi_{8005}(81,\cdot)\) \(\chi_{8005}(91,\cdot)\) \(\chi_{8005}(106,\cdot)\) \(\chi_{8005}(151,\cdot)\) \(\chi_{8005}(221,\cdot)\) \(\chi_{8005}(326,\cdot)\) \(\chi_{8005}(336,\cdot)\) \(\chi_{8005}(351,\cdot)\) \(\chi_{8005}(381,\cdot)\) \(\chi_{8005}(506,\cdot)\) \(\chi_{8005}(541,\cdot)\) \(\chi_{8005}(651,\cdot)\) \(\chi_{8005}(691,\cdot)\) \(\chi_{8005}(761,\cdot)\) \(\chi_{8005}(766,\cdot)\) \(\chi_{8005}(786,\cdot)\) \(\chi_{8005}(801,\cdot)\) \(\chi_{8005}(816,\cdot)\) \(\chi_{8005}(831,\cdot)\) \(\chi_{8005}(981,\cdot)\) \(\chi_{8005}(1021,\cdot)\) \(\chi_{8005}(1076,\cdot)\) \(\chi_{8005}(1101,\cdot)\) \(\chi_{8005}(1206,\cdot)\) \(\chi_{8005}(1256,\cdot)\) \(\chi_{8005}(1281,\cdot)\) \(\chi_{8005}(1296,\cdot)\) \(\chi_{8005}(1391,\cdot)\) ...

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: $\Q(\zeta_{400})$
Fixed field: Number field defined by a degree 400 polynomial (not computed)

Values on generators

\((1602,4806)\) → \((1,e\left(\frac{147}{400}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 8005 }(21, a) \) \(1\)\(1\)\(e\left(\frac{11}{100}\right)\)\(e\left(\frac{147}{400}\right)\)\(e\left(\frac{11}{50}\right)\)\(e\left(\frac{191}{400}\right)\)\(e\left(\frac{289}{400}\right)\)\(e\left(\frac{33}{100}\right)\)\(e\left(\frac{147}{200}\right)\)\(e\left(\frac{251}{400}\right)\)\(e\left(\frac{47}{80}\right)\)\(e\left(\frac{11}{16}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 8005 }(21,a) \;\) at \(\;a = \) e.g. 2