Properties

Label 2.17.al_cm
Base Field $\F_{17}$
Dimension $2$
Ordinary Yes
$p$-rank $2$
Principally polarizable Yes
Contains a Jacobian No

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Invariants

Base field:  $\F_{17}$
Dimension:  $2$
L-polynomial:  $( 1 - 6 x + 17 x^{2} )( 1 - 5 x + 17 x^{2} )$
Frobenius angles:  $\pm0.240632536990$, $\pm0.292637436158$
Angle rank:  $2$ (numerical)
Jacobians:  0

This isogeny class is not simple.

Newton polygon

This isogeny class is ordinary.

$p$-rank:  $2$
Slopes:  $[0, 0, 1, 1]$

Point counts

This isogeny class is principally polarizable, but does not contain a Jacobian.

Point counts of the abelian variety

$r$ 1 2 3 4 5 6 7 8 9 10
$A(\F_{q^r})$ 156 86112 25240176 7065661824 2019105335676 582493185570816 168352294123689468 48659500972028044800 14063046909587100522864 4064235318498004170329952

Point counts of the (virtual) curve

$r$ 1 2 3 4 5 6 7 8 9 10
$C(\F_{q^r})$ 7 297 5134 84593 1422047 24132222 410276447 6975515041 118587559918 2015995840857

Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{17}$
The isogeny class factors as 1.17.ag $\times$ 1.17.af 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 $\F_{17}$.

Base change

This is a primitive isogeny class.

Twists

Below is a list of all twists of this isogeny class.
TwistExtension DegreeCommon base change
2.17.ab_e$2$(not in LMFDB)
2.17.b_e$2$(not in LMFDB)
2.17.l_cm$2$(not in LMFDB)