Properties

Label 1.139.an
Base Field $\F_{139}$
Dimension $1$
Ordinary Yes
$p$-rank $1$
Principally polarizable Yes
Contains a Jacobian Yes

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Invariants

Base field:  $\F_{139}$
Dimension:  $1$
L-polynomial:  $1 - 13 x + 139 x^{2}$
Frobenius angles:  $\pm0.314123276228$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{-43}) \)
Galois group:  $C_2$
Jacobians:  5

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 5 curves, and hence is principally polarizable:

Point counts of the abelian variety

$r$ 1 2 3 4 5 6 7 8 9 10
$A(\F_{q^r})$ 127 19431 2688844 373327803 51888744457 7212544390224 1002544317064963 139353667242134643 19370159749959548116 2692452204290669430951

Point counts of the curve

$r$ 1 2 3 4 5 6 7 8 9 10
$C(\F_{q^r})$ 127 19431 2688844 373327803 51888744457 7212544390224 1002544317064963 139353667242134643 19370159749959548116 2692452204290669430951

Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{139}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-43}) \).
All geometric endomorphisms are defined over $\F_{139}$.

Base change

This is a primitive isogeny class.

Twists

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