Properties

Label 1.347.abf
Base Field $\F_{347}$
Dimension $1$
Ordinary Yes
$p$-rank $1$
Principally polarizable Yes
Contains a Jacobian Yes

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Invariants

Base field:  $\F_{347}$
Dimension:  $1$
L-polynomial:  $1 - 31 x + 347 x^{2}$
Frobenius angles:  $\pm0.187147930509$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{-427}) \)
Galois group:  $C_2$
Jacobians:  2

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 2 curves, and hence is principally polarizable:

Point counts of the abelian variety

$r$ 1 2 3 4 5 6 7 8 9 10
$A(\F_{q^r})$ 317 120143 41784404 14498496811 5030923961347 1745729166991376 605767994958349057 210201493947245425683 72939918399309527462348 25310151684653728025478143

Point counts of the curve

$r$ 1 2 3 4 5 6 7 8 9 10
$C(\F_{q^r})$ 317 120143 41784404 14498496811 5030923961347 1745729166991376 605767994958349057 210201493947245425683 72939918399309527462348 25310151684653728025478143

Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{347}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-427}) \).
All geometric endomorphisms are defined over $\F_{347}$.

Base change

This is a primitive isogeny class.

Twists

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