Properties

Label 2.53.c_dm
Base field $\F_{53}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple yes
Geometrically simple yes
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{53}$
Dimension:  $2$
L-polynomial:  $1 + 2 x + 90 x^{2} + 106 x^{3} + 2809 x^{4}$
Frobenius angles:  $\pm0.431189182096$, $\pm0.614449440024$
Angle rank:  $2$ (numerical)
Number field:  \(\Q(\sqrt{-214 -22 \sqrt{17}})\)
Galois group:  $D_{4}$
Jacobians:  $128$
Cyclic group of points:    no
Non-cyclic primes:   $2$

This isogeny class is simple and geometrically 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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3008$ $8398336$ $22132481984$ $62225085464576$ $174889043015194048$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $56$ $2986$ $148664$ $7886094$ $418199256$ $22164276826$ $1174712036120$ $62259708133278$ $3299763474061688$ $174887469147825546$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 128 curves (of which all are hyperelliptic):

  • $y^2=44 x^6+35 x^5+29 x^4+30 x^3+12 x^2+12 x+6$
  • $y^2=16 x^5+45 x^4+3 x^3+42 x^2+42 x+21$
  • $y^2=20 x^6+47 x^5+46 x^4+31 x^3+45 x^2+38 x+48$
  • $y^2=49 x^6+36 x^5+16 x^4+39 x^3+51 x^2+44 x+26$
  • $y^2=44 x^5+52 x^4+28 x^3+51 x^2+18 x+1$
  • $y^2=10 x^6+27 x^5+8 x^4+24 x^3+22 x^2+42 x+12$
  • $y^2=46 x^6+31 x^5+5 x^4+30 x^3+x^2+12 x+20$
  • $y^2=6 x^6+31 x^5+40 x^4+20 x^3+33 x^2+6 x+21$
  • $y^2=26 x^6+44 x^5+8 x^4+42 x^3+39 x^2+8 x+26$
  • $y^2=13 x^6+4 x^5+15 x^4+11 x^3+9 x^2+47 x+35$
  • $y^2=10 x^6+7 x^5+30 x^4+14 x^3+39 x^2+11 x+41$
  • $y^2=16 x^6+30 x^5+14 x^4+16 x^3+29 x^2+2 x+4$
  • $y^2=52 x^6+11 x^4+21 x^3+8 x^2+36 x+14$
  • $y^2=47 x^6+37 x^5+38 x^4+32 x^3+48 x^2+26 x+27$
  • $y^2=21 x^6+22 x^5+29 x^4+15 x^3+17 x^2+15 x+4$
  • $y^2=40 x^6+50 x^5+10 x^4+51 x^3+16 x^2+50 x+38$
  • $y^2=19 x^6+14 x^5+14 x^4+16 x^3+31 x^2+29 x+39$
  • $y^2=50 x^6+2 x^5+20 x^4+38 x^3+32 x^2+27 x+18$
  • $y^2=24 x^6+51 x^5+37 x^4+44 x^3+14 x^2+12 x+15$
  • $y^2=14 x^6+15 x^5+51 x^4+8 x^3+8 x^2+38 x+7$
  • and 108 more

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{53}$.

Endomorphism algebra over $\F_{53}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-214 -22 \sqrt{17}})\).

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.53.ac_dm$2$(not in LMFDB)