Properties

Label 2.79.o_hb
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:  $1 + 14 x + 183 x^{2} + 1106 x^{3} + 6241 x^{4}$
Frobenius angles:  $\pm0.537709713008$, $\pm0.733435841254$
Angle rank:  $2$ (numerical)
Number field:  4.0.31302720.1
Galois group:  $D_{4}$
Jacobians:  $156$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $7545$ $40026225$ $242288299440$ $1517151830957625$ $9468295513869612225$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $94$ $6412$ $491416$ $38951188$ $3077062714$ $243087899902$ $19203910521526$ $1517108693204068$ $119851596804591304$ $9468276088004291452$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 156 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 4.0.31302720.1.

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.ao_hb$2$(not in LMFDB)