Properties

Label 2.53.m_fm
Base field $\F_{53}$
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:  $\F_{53}$
Dimension:  $2$
L-polynomial:  $( 1 + 6 x + 53 x^{2} )^{2}$
  $1 + 12 x + 142 x^{2} + 636 x^{3} + 2809 x^{4}$
Frobenius angles:  $\pm0.635198170427$, $\pm0.635198170427$
Angle rank:  $1$ (numerical)
Jacobians:  $90$
Cyclic group of points:    no
Non-cyclic primes:   $2, 3, 5$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3600$ $8294400$ $21945459600$ $62271037440000$ $174916583838090000$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $66$ $2950$ $147402$ $7891918$ $418265106$ $22163867350$ $1174710413082$ $62259720942238$ $3299763447134946$ $174887469615379750$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 90 curves (of which all are hyperelliptic):

  • $y^2=28 x^6+21 x^5+41 x^4+14 x^3+23 x^2+12 x+40$
  • $y^2=47 x^6+18 x^5+23 x^4+8 x^3+48 x^2+27 x+25$
  • $y^2=15 x^6+38 x^5+20 x^4+49 x^3+20 x^2+38 x+15$
  • $y^2=14 x^6+44 x^4+44 x^2+14$
  • $y^2=13 x^6+27 x^5+8 x^4+27 x^3+8 x^2+27 x+13$
  • $y^2=4 x^6+41 x^4+41 x^2+4$
  • $y^2=25 x^6+50 x^5+18 x^4+52 x^3+45 x^2+24 x+18$
  • $y^2=25 x^6+32 x^5+43 x^4+33 x^3+11 x^2+26 x+29$
  • $y^2=9 x^6+50 x^5+23 x^4+13 x^3+33 x^2+34 x+38$
  • $y^2=4 x^6+16 x^5+28 x^4+31 x^3+6 x^2+44 x+44$
  • $y^2=25 x^6+15 x^5+51 x^4+27 x^3+8 x^2+28 x+43$
  • $y^2=15 x^6+43 x^5+12 x^3+43 x+15$
  • $y^2=12 x^6+16 x^5+33 x^4+22 x^3+41 x^2+47 x+41$
  • $y^2=35 x^6+29 x^5+35 x^4+47 x^3+18 x^2+29 x+18$
  • $y^2=17 x^6+52 x^5+12 x^4+47 x^3+12 x^2+52 x+17$
  • $y^2=36 x^6+2 x^5+45 x^4+45 x^3+33 x^2+31 x+44$
  • $y^2=49 x^6+37 x^5+2 x^4+11 x^3+12 x^2+x+11$
  • $y^2=52 x^6+20 x^4+50 x^3+10 x^2+52 x+5$
  • $y^2=47 x^6+9 x^5+29 x^4+37 x^3+39 x^2+38 x+51$
  • $y^2=41 x^6+51 x^5+51 x^4+34 x^3+26 x^2+33 x+23$
  • and 70 more

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{53}$
The isogeny class factors as 1.53.g 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-11}) \)$)$

Base change

This is a primitive isogeny class.

Twists

Below are some of the twists of this isogeny class.

TwistExtension degreeCommon base change
2.53.am_fm$2$(not in LMFDB)
2.53.a_cs$2$(not in LMFDB)
2.53.ag_ar$3$(not in LMFDB)

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

TwistExtension degreeCommon base change
2.53.am_fm$2$(not in LMFDB)
2.53.a_cs$2$(not in LMFDB)
2.53.ag_ar$3$(not in LMFDB)
2.53.a_acs$4$(not in LMFDB)
2.53.g_ar$6$(not in LMFDB)