Properties

Label 2.53.d_do
Base field $\F_{53}$
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:  $\F_{53}$
Dimension:  $2$
L-polynomial:  $1 + 3 x + 92 x^{2} + 159 x^{3} + 2809 x^{4}$
Frobenius angles:  $\pm0.444382880548$, $\pm0.624034545759$
Angle rank:  $2$ (numerical)
Number field:  \(\Q(\sqrt{-774 -6 \sqrt{65}})\)
Galois group:  $D_{4}$
Jacobians:  $72$
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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3064$ $8395360$ $22116148096$ $62225232969600$ $174890256446331544$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $57$ $2985$ $148554$ $7886113$ $418202157$ $22164303030$ $1174712305929$ $62259703471393$ $3299763435863202$ $174887469609601425$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 72 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{53}$.

Endomorphism algebra over $\F_{53}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-774 -6 \sqrt{65}})\).

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.53.ad_do$2$(not in LMFDB)