Properties

Label 2.73.aq_fm
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:  $1 - 16 x + 142 x^{2} - 1168 x^{3} + 5329 x^{4}$
Frobenius angles:  $\pm0.100327985627$, $\pm0.504586502396$
Angle rank:  $2$ (numerical)
Number field:  \(\Q(\sqrt{-14 +2 \sqrt{17}})\)
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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $4288$ $28540928$ $151030053568$ $806065674911744$ $4297640395107652288$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $58$ $5358$ $388234$ $28384350$ $2073078618$ $151335246414$ $11047401795754$ $806460081697470$ $58871587233910906$ $4297625837952657838$

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 $\F_{73}$.

Endomorphism algebra over $\F_{73}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-14 +2 \sqrt{17}})\).

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.q_fm$2$(not in LMFDB)