Properties

Label 1.277.abe
Base Field $\F_{277}$
Dimension $1$
Ordinary Yes
$p$-rank $1$
Principally polarizable Yes
Contains a Jacobian Yes

Learn more about

Invariants

Base field:  $\F_{277}$
Dimension:  $1$
L-polynomial:  $1 - 30 x + 277 x^{2}$
Frobenius angles:  $\pm0.142641462305$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{-13}) \)
Galois group:  $C_2$
Jacobians:  6

This isogeny class is simple and geometrically simple.

Newton polygon

This isogeny class is ordinary.

$p$-rank:  $1$
Slopes:  $[0, 1]$

Point counts

This isogeny class contains the Jacobians of 6 curves, and hence is principally polarizable:

Point counts of the abelian variety

$r$ 1 2 3 4 5 6 7 8 9 10
$A(\F_{q^r})$ 248 76384 21251864 5887373184 1630794610808 451729706191456 125129118734735384 34660765704190348800 9601032097237628498168 2659485890901466935002464

Point counts of the curve

$r$ 1 2 3 4 5 6 7 8 9 10
$C(\F_{q^r})$ 248 76384 21251864 5887373184 1630794610808 451729706191456 125129118734735384 34660765704190348800 9601032097237628498168 2659485890901466935002464

Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{277}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-13}) \).
All geometric endomorphisms are defined over $\F_{277}$.

Base change

This is a primitive isogeny class.

Twists

Below is a list of all twists of this isogeny class.
TwistExtension DegreeCommon base change
1.277.be$2$(not in LMFDB)