Properties

Label 2.73.aw_kh
Base field $\F_{73}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{73}$
Dimension:  $2$
L-polynomial:  $( 1 - 11 x + 73 x^{2} )^{2}$
  $1 - 22 x + 267 x^{2} - 1606 x^{3} + 5329 x^{4}$
Frobenius angles:  $\pm0.277387524567$, $\pm0.277387524567$
Angle rank:  $1$ (numerical)
Jacobians:  $47$
Cyclic group of points:    no
Non-cyclic primes:   $3, 7$

This isogeny class is not simple, primitive, ordinary, and not supersingular. It is principally polarizable and contains a Jacobian.

Newton polygon

This isogeny class is ordinary.

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

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3969$ $28676025$ $152174889216$ $807030088475625$ $4297757139061247169$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $52$ $5380$ $391174$ $28418308$ $2073134932$ $151333458190$ $11047385446324$ $806460004164868$ $58871586697559062$ $4297625835989992900$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 47 curves (of which all are hyperelliptic):

  • $y^2=21 x^6+44 x^5+8 x^4+21 x^3+36 x^2+15 x+43$
  • $y^2=5 x^6+50 x^5+58 x^4+42 x^3+33 x^2+23 x+11$
  • $y^2=18 x^6+12 x^5+22 x^4+40 x^3+5 x^2+70 x+67$
  • $y^2=59 x^6+3 x^5+14 x^4+56 x^3+63 x^2+6 x+20$
  • $y^2=47 x^6+21 x^5+9 x^4+62 x^3+9 x^2+21 x+47$
  • $y^2=11 x^6+60 x^5+29 x^4+23 x^3+65 x^2+43 x+2$
  • $y^2=x^6+x^3+46$
  • $y^2=21 x^6+27 x^5+67 x^4+58 x^3+70 x^2+25 x+30$
  • $y^2=59 x^6+31 x^5+46 x^4+63 x^3+36 x^2+47 x+44$
  • $y^2=45 x^6+25 x^5+29 x^4+9 x^3+13 x^2+65 x+21$
  • $y^2=24 x^6+42 x^5+12 x^4+70 x^3+66 x^2+36 x+62$
  • $y^2=66 x^6+37 x^5+57 x^4+10 x^3+41 x^2+2 x+17$
  • $y^2=17 x^6+44 x^5+23 x^4+45 x^3+3 x^2+22 x+63$
  • $y^2=12 x^6+58 x^5+61 x^4+42 x^3+18 x^2+21 x+69$
  • $y^2=5 x^6+59 x^5+63 x^4+62 x^3+11 x^2+40 x+47$
  • $y^2=15 x^6+45 x^5+8 x^4+45 x^3+46 x^2+5 x+40$
  • $y^2=x^6+66 x^5+42 x^4+68 x^3+33 x^2+40 x+70$
  • $y^2=13 x^6+62 x^5+49 x^4+16 x^3+x^2+47 x+59$
  • $y^2=36 x^6+23 x^5+20 x^4+59 x^3+56 x^2+5$
  • $y^2=34 x^6+65 x^5+44 x^4+21 x^3+63 x^2+2 x+60$
  • and 27 more

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{73}$.

Endomorphism algebra over $\F_{73}$
The isogeny class factors as 1.73.al 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-19}) \)$)$

Base change

This is a primitive isogeny class.

Twists

Below are some of the twists of this isogeny class.

TwistExtension degreeCommon base change
2.73.a_z$2$(not in LMFDB)
2.73.w_kh$2$(not in LMFDB)
2.73.l_bw$3$(not in LMFDB)

Below is a list of all twists of this isogeny class.

TwistExtension degreeCommon base change
2.73.a_z$2$(not in LMFDB)
2.73.w_kh$2$(not in LMFDB)
2.73.l_bw$3$(not in LMFDB)
2.73.a_az$4$(not in LMFDB)
2.73.al_bw$6$(not in LMFDB)