Properties

Label 2.47.ac_cp
Base field $\F_{47}$
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:  $\F_{47}$
Dimension:  $2$
L-polynomial:  $1 - 2 x + 67 x^{2} - 94 x^{3} + 2209 x^{4}$
Frobenius angles:  $\pm0.348259740906$, $\pm0.601330634977$
Angle rank:  $2$ (numerical)
Number field:  4.0.19732496.1
Galois group:  $D_{4}$
Jacobians:  $138$
Isomorphism classes:  138
Cyclic group of points:    yes

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2181$ $5175513$ $10790715600$ $23812085043369$ $52601301209030421$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $46$ $2340$ $103936$ $4879844$ $229354466$ $10778946750$ $506621717438$ $23811302381764$ $1119130552406272$ $52599131802605700$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 138 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{47}$.

Endomorphism algebra over $\F_{47}$
The endomorphism algebra of this simple isogeny class is 4.0.19732496.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.47.c_cp$2$(not in LMFDB)