Properties

Label 1.173.am
Base field $\F_{173}$
Dimension $1$
$p$-rank $1$
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:  $\F_{173}$
Dimension:  $1$
L-polynomial:  $1 - 12 x + 173 x^{2}$
Frobenius angles:  $\pm0.349220336882$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{-137}) \)
Galois group:  $C_2$
Jacobians:  $8$

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:  $1$
Slopes:  $[0, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $162$ $30132$ $5182218$ $895764096$ $154963342242$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $162$ $30132$ $5182218$ $895764096$ $154963342242$ $26808743437524$ $4637914302841002$ $802359179904526848$ $138808137897589681314$ $24013807852618538482932$

Jacobians and polarizations

This isogeny class contains the Jacobians of 8 curves (of which all are hyperelliptic), and hence is principally polarizable:

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{173}$.

Endomorphism algebra over $\F_{173}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-137}) \).

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
1.173.m$2$(not in LMFDB)