Properties

Label 2.73.i_bt
Base field $\F_{73}$
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:  $\F_{73}$
Dimension:  $2$
L-polynomial:  $1 + 8 x + 45 x^{2} + 584 x^{3} + 5329 x^{4}$
Frobenius angles:  $\pm0.369387024164$, $\pm0.834005354106$
Angle rank:  $2$ (numerical)
Number field:  4.0.334113.1
Galois group:  $D_{4}$
Jacobians:  $324$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $5967$ $28540161$ $151795610928$ $806630598883161$ $4297295989610003367$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $82$ $5356$ $390202$ $28404244$ $2072912482$ $151334399086$ $11047394482066$ $806460177351268$ $58871586953271850$ $4297625825334749596$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 324 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{73}$.

Endomorphism algebra over $\F_{73}$
The endomorphism algebra of this simple isogeny class is 4.0.334113.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.73.ai_bt$2$(not in LMFDB)