Properties

Label 1.173.av
Base Field $\F_{173}$
Dimension $1$
Ordinary Yes
$p$-rank $1$
Principally polarizable Yes
Contains a Jacobian Yes

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Invariants

Base field:  $\F_{173}$
Dimension:  $1$
L-polynomial:  $1 - 21 x + 173 x^{2}$
Frobenius angles:  $\pm0.205732831898$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{-251}) \)
Galois group:  $C_2$
Jacobians:  7

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 7 curves, and hence is principally polarizable:

Point counts of the abelian variety

$r$ 1 2 3 4 5 6 7 8 9 10
$A(\F_{q^r})$ 153 29835 5179356 895795875 154964676213 26808761004480 4637914351919001 802359177683587875 138808137855315385548 24013807852306033098675

Point counts of the curve

$r$ 1 2 3 4 5 6 7 8 9 10
$C(\F_{q^r})$ 153 29835 5179356 895795875 154964676213 26808761004480 4637914351919001 802359177683587875 138808137855315385548 24013807852306033098675

Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{173}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-251}) \).
All geometric endomorphisms are defined over $\F_{173}$.

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.v$2$(not in LMFDB)