Properties

Label 1.149.s
Base field $\F_{149}$
Dimension $1$
$p$-rank $1$
Ordinary yes
Supersingular no
Simple yes
Geometrically simple yes
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

Related objects

Downloads

Learn more

Invariants

Base field:  $\F_{149}$
Dimension:  $1$
L-polynomial:  $1 + 18 x + 149 x^{2}$
Frobenius angles:  $\pm0.763903679701$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{-17}) \)
Galois group:  $C_2$
Jacobians:  $12$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $168$ $22176$ $3305736$ $492928128$ $73439318568$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $168$ $22176$ $3305736$ $492928128$ $73439318568$ $10942528300704$ $1630436498669832$ $242935031822934528$ $36197319890739012264$ $5393400662001272681376$

Jacobians and polarizations

This isogeny class contains the Jacobians of 12 curves (of which all are hyperelliptic), and hence is principally polarizable:

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{149}$.

Endomorphism algebra over $\F_{149}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-17}) \).

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
1.149.as$2$(not in LMFDB)