Properties

Label 2.43.e_w
Base field $\F_{43}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple yes
Geometrically simple yes
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{43}$
Dimension:  $2$
L-polynomial:  $1 + 4 x + 22 x^{2} + 172 x^{3} + 1849 x^{4}$
Frobenius angles:  $\pm0.341988799982$, $\pm0.785425898825$
Angle rank:  $2$ (numerical)
Number field:  4.0.160973.1
Galois group:  $D_{4}$
Jacobians:  $224$
Cyclic group of points:    no
Non-cyclic primes:   $2$

This isogeny class is simple and geometrically simple, primitive, ordinary, and not supersingular. It is principally polarizable and contains a Jacobian.

Newton polygon

This isogeny class is ordinary.

$p$-rank:  $2$
Slopes:  $[0, 0, 1, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2048$ $3473408$ $6346508288$ $11704718065664$ $21605826661337088$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $48$ $1878$ $79824$ $3423630$ $146969968$ $6321304614$ $271818276624$ $11688200592030$ $502592699230896$ $21611482122770038$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 224 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{43}$.

Endomorphism algebra over $\F_{43}$
The endomorphism algebra of this simple isogeny class is 4.0.160973.1.

Base change

This is a primitive isogeny class.

Twists

Below is a list of all twists of this isogeny class.

TwistExtension degreeCommon base change
2.43.ae_w$2$(not in LMFDB)