# Properties

 Label 3.16.ar_fh_abab Base Field $\F_{2^{4}}$ Dimension $3$ Ordinary Yes $p$-rank $3$ Principally polarizable Yes

## Invariants

 Base field: $\F_{2^{4}}$ Dimension: $3$ L-polynomial: $( 1 - 7 x + 16 x^{2} )( 1 - 10 x + 51 x^{2} - 160 x^{3} + 256 x^{4} )$ Frobenius angles: $\pm0.118775077357$, $\pm0.160861246510$, $\pm0.396715540983$ Angle rank: $3$ (numerical)

This isogeny class is not simple.

## Newton polygon

This isogeny class is ordinary. $p$-rank: $3$ Slopes: $[0, 0, 0, 1, 1, 1]$

## Point counts

This isogeny class is principally polarizable, but it is unknown whether it contains a Jacobian.

 $r$ 1 2 3 4 5 6 7 8 9 10 $A(\F_{q^r})$ 1380 15831360 69465991500 281678902871040 1153166172334594500 4725240931647509400000 19348835301773275695736620 79234118155368952808999362560 324520832793560836093941741286500 1329226732487551866151906733025384000

 $r$ 1 2 3 4 5 6 7 8 9 10 $C(\F_{q^r})$ 0 242 4140 65582 1048800 16787426 268519020 4295290142 68719959360 1099510582802

## Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{2^{4}}$
 The isogeny class factors as 1.16.ah $\times$ 2.16.ak_bz and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:
All geometric endomorphisms are defined over $\F_{2^{4}}$.

## Base change

This is a primitive isogeny class.

## Twists

Below is a list of all twists of this isogeny class.
 Twist Extension Degree Common base change 3.16.ad_ad_bl $2$ (not in LMFDB) 3.16.d_ad_abl $2$ (not in LMFDB) 3.16.r_fh_bab $2$ (not in LMFDB)