Properties

Label 2.73.q_hy
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:  $( 1 + 6 x + 73 x^{2} )( 1 + 10 x + 73 x^{2} )$
  $1 + 16 x + 206 x^{2} + 1168 x^{3} + 5329 x^{4}$
Frobenius angles:  $\pm0.614200251220$, $\pm0.698986253580$
Angle rank:  $2$ (numerical)
Jacobians:  $134$
Cyclic group of points:    no
Non-cyclic primes:   $2$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $6720$ $29245440$ $150446237760$ $806661763891200$ $4297812941128257600$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $90$ $5486$ $386730$ $28405342$ $2073161850$ $151333160654$ $11047400876490$ $806460130441918$ $58871586369568410$ $4297625830107235886$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 134 curves (of which all are hyperelliptic):

  • $y^2=71 x^6+23 x^5+40 x^4+45 x^3+63 x^2+7 x+62$
  • $y^2=6 x^6+6 x^5+45 x^4+3 x^3+31 x^2+50 x+2$
  • $y^2=63 x^6+24 x^4+41 x^3+24 x^2+63$
  • $y^2=25 x^6+32 x^5+18 x^4+47 x^3+18 x^2+32 x+25$
  • $y^2=22 x^6+55 x^5+21 x^4+3 x^3+21 x^2+55 x+22$
  • $y^2=55 x^6+43 x^5+x^4+26 x^3+63 x^2+69 x+54$
  • $y^2=32 x^6+16 x^5+56 x^4+66 x^3+56 x^2+16 x+32$
  • $y^2=28 x^6+40 x^5+33 x^4+29 x^3+33 x^2+40 x+28$
  • $y^2=23 x^6+43 x^5+4 x^4+9 x^3+x^2+62 x+38$
  • $y^2=13 x^6+19 x^5+64 x^4+4 x^3+37 x^2+12 x+29$
  • $y^2=4 x^6+40 x^5+62 x^4+49 x^3+62 x^2+40 x+4$
  • $y^2=54 x^6+5 x^5+8 x^4+20 x^3+3 x^2+68 x+71$
  • $y^2=44 x^6+18 x^5+54 x^4+56 x^3+54 x^2+18 x+44$
  • $y^2=72 x^6+50 x^5+17 x^4+21 x^3+17 x^2+50 x+72$
  • $y^2=68 x^6+43 x^5+46 x^4+16 x^3+36 x^2+44 x+47$
  • $y^2=25 x^6+17 x^5+16 x^4+2 x^3+32 x^2+68 x+54$
  • $y^2=38 x^6+30 x^5+44 x^4+18 x^3+44 x^2+30 x+38$
  • $y^2=52 x^6+67 x^5+44 x^4+56 x^3+44 x^2+67 x+52$
  • $y^2=69 x^6+20 x^5+23 x^4+60 x^3+6 x^2+40 x+36$
  • $y^2=67 x^6+6 x^5+36 x^4+45 x^3+6 x^2+61 x+2$
  • and 114 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.g $\times$ 1.73.k and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:

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.aq_hy$2$(not in LMFDB)
2.73.ae_di$2$(not in LMFDB)
2.73.e_di$2$(not in LMFDB)
2.73.al_bs$3$(not in LMFDB)
2.73.n_hg$3$(not in LMFDB)

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

TwistExtension degreeCommon base change
2.73.aq_hy$2$(not in LMFDB)
2.73.ae_di$2$(not in LMFDB)
2.73.e_di$2$(not in LMFDB)
2.73.al_bs$3$(not in LMFDB)
2.73.n_hg$3$(not in LMFDB)
2.73.aba_lu$4$(not in LMFDB)
2.73.ag_ao$4$(not in LMFDB)
2.73.g_ao$4$(not in LMFDB)
2.73.ba_lu$4$(not in LMFDB)
2.73.ax_jo$6$(not in LMFDB)
2.73.an_hg$6$(not in LMFDB)
2.73.ab_ea$6$(not in LMFDB)
2.73.b_ea$6$(not in LMFDB)
2.73.l_bs$6$(not in LMFDB)
2.73.x_jo$6$(not in LMFDB)
2.73.abh_qc$12$(not in LMFDB)
2.73.ax_jy$12$(not in LMFDB)
2.73.aj_bi$12$(not in LMFDB)
2.73.ab_aew$12$(not in LMFDB)
2.73.b_aew$12$(not in LMFDB)
2.73.j_bi$12$(not in LMFDB)
2.73.x_jy$12$(not in LMFDB)
2.73.bh_qc$12$(not in LMFDB)