Properties

Label 2.53.c_bi
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:  $1 + 2 x + 34 x^{2} + 106 x^{3} + 2809 x^{4}$
Frobenius angles:  $\pm0.326630458643$, $\pm0.727535697083$
Angle rank:  $2$ (numerical)
Number field:  4.0.24982352.1
Galois group:  $D_{4}$
Jacobians:  $196$
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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2952$ $8076672$ $22182322824$ $62327613210624$ $174873354043248072$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $56$ $2874$ $149000$ $7899086$ $418161736$ $22163943402$ $1174711868344$ $62259682566814$ $3299763721827416$ $174887471468353434$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 196 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 4.0.24982352.1.

Base change

This is a primitive isogeny class.

Twists

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

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