Properties

Label 2.53.am_ek
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:  $1 - 12 x + 114 x^{2} - 636 x^{3} + 2809 x^{4}$
Frobenius angles:  $\pm0.217496046849$, $\pm0.484504985804$
Angle rank:  $2$ (numerical)
Number field:  4.0.3502912.3
Galois group:  $D_{4}$
Jacobians:  $56$
Isomorphism classes:  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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2276$ $8129872$ $22234373732$ $62256868762624$ $174899810926531076$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $42$ $2894$ $149346$ $7890126$ $418225002$ $22164817502$ $1174711711362$ $62259665010334$ $3299763429200682$ $174887470391553134$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 56 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 4.0.3502912.3.

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.m_ek$2$(not in LMFDB)