Properties

Label 1.181.h
Base field $\F_{181}$
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:  $\F_{181}$
Dimension:  $1$
L-polynomial:  $1 + 7 x + 181 x^{2}$
Frobenius angles:  $\pm0.583772988431$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{-3}) \)
Galois group:  $C_2$
Jacobians:  $10$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $189$ $33075$ $5926284$ $1073250675$ $194265097929$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $189$ $33075$ $5926284$ $1073250675$ $194265097929$ $35161828228800$ $6364290773491749$ $1151936658917259075$ $208500535086218801244$ $37738596846616577926875$

Jacobians and polarizations

This isogeny class contains the Jacobians of 10 curves (of which all are hyperelliptic), and hence is principally polarizable:

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{181}$.

Endomorphism algebra over $\F_{181}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-3}) \).

Base change

This is a primitive isogeny class.

Twists

Below are some of the twists of this isogeny class.

TwistExtension degreeCommon base change
1.181.ah$2$(not in LMFDB)
1.181.aba$3$(not in LMFDB)
1.181.t$3$(not in LMFDB)

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

TwistExtension degreeCommon base change
1.181.ah$2$(not in LMFDB)
1.181.aba$3$(not in LMFDB)
1.181.t$3$(not in LMFDB)
1.181.at$6$(not in LMFDB)
1.181.ba$6$(not in LMFDB)