Properties

Label 2.79.an_ew
Base field $\F_{79}$
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:  $\F_{79}$
Dimension:  $2$
L-polynomial:  $1 - 13 x + 126 x^{2} - 1027 x^{3} + 6241 x^{4}$
Frobenius angles:  $\pm0.176366695133$, $\pm0.537995068290$
Angle rank:  $2$ (numerical)
Number field:  4.0.824373.1
Galois group:  $D_{4}$
Jacobians:  $272$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $5328$ $39469824$ $242908911936$ $1516969480117248$ $9468786077323779888$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $67$ $6325$ $492676$ $38946505$ $3077222137$ $243089168974$ $19203908976319$ $1517108786419633$ $119851596403878796$ $9468276080358825805$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 272 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{79}$.

Endomorphism algebra over $\F_{79}$
The endomorphism algebra of this simple isogeny class is 4.0.824373.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.79.n_ew$2$(not in LMFDB)