Properties

Label 2.73.q_hm
Base field $\F_{73}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{73}$
Dimension:  $2$
L-polynomial:  $( 1 + 4 x + 73 x^{2} )( 1 + 12 x + 73 x^{2} )$
  $1 + 16 x + 194 x^{2} + 1168 x^{3} + 5329 x^{4}$
Frobenius angles:  $\pm0.575208518631$, $\pm0.747819727108$
Angle rank:  $2$ (numerical)
Jacobians:  $128$

This isogeny class is not 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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $6708$ $29112720$ $150669736308$ $806585375232000$ $4297671635204045748$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $90$ $5462$ $387306$ $28402654$ $2073093690$ $151334313014$ $11047396814922$ $806460053016766$ $58871587441871898$ $4297625827036418582$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 128 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{73}$
The isogeny class factors as 1.73.e $\times$ 1.73.m and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:

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.aq_hm$2$(not in LMFDB)
2.73.ai_du$2$(not in LMFDB)
2.73.i_du$2$(not in LMFDB)