Invariants
| Base field: | $\F_{53}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 9 x + 53 x^{2} )( 1 + 9 x + 53 x^{2} )$ |
| $1 + 25 x^{2} + 2809 x^{4}$ | |
| Frobenius angles: | $\pm0.287893547303$, $\pm0.712106452697$ |
| Angle rank: | $1$ (numerical) |
| Jacobians: | $450$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $3$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2835$ | $8037225$ | $22164166080$ | $62338525475625$ | $174887471142135675$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $54$ | $2860$ | $148878$ | $7900468$ | $418195494$ | $22163971030$ | $1174711139838$ | $62259672113188$ | $3299763591802134$ | $174887471918758300$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 450 curves (of which all are hyperelliptic):
- $y^2=21 x^6+14 x^5+34 x^4+30 x^3+30 x^2+21 x+1$
- $y^2=42 x^6+28 x^5+15 x^4+7 x^3+7 x^2+42 x+2$
- $y^2=13 x^6+20 x^5+47 x^4+46 x^3+47 x^2+20 x+13$
- $y^2=26 x^6+40 x^5+41 x^4+39 x^3+41 x^2+40 x+26$
- $y^2=41 x^6+43 x^4+21 x^3+33 x^2+11 x+50$
- $y^2=29 x^6+33 x^4+42 x^3+13 x^2+22 x+47$
- $y^2=6 x^6+11 x^5+31 x^4+20 x^3+31 x^2+11 x+6$
- $y^2=12 x^6+22 x^5+9 x^4+40 x^3+9 x^2+22 x+12$
- $y^2=10 x^6+7 x^5+6 x^4+32 x^3+23 x^2+27 x+10$
- $y^2=20 x^6+14 x^5+12 x^4+11 x^3+46 x^2+x+20$
- $y^2=25 x^6+x^5+27 x^4+4 x^3+27 x^2+x+25$
- $y^2=50 x^6+2 x^5+x^4+8 x^3+x^2+2 x+50$
- $y^2=18 x^6+32 x^5+32 x^4+17 x^3+4 x^2+24 x+4$
- $y^2=36 x^6+11 x^5+11 x^4+34 x^3+8 x^2+48 x+8$
- $y^2=49 x^6+37 x^4+42 x^3+34 x^2+7 x+25$
- $y^2=45 x^6+21 x^4+31 x^3+15 x^2+14 x+50$
- $y^2=20 x^6+22 x^5+52 x^4+32 x^3+21 x^2+42 x+43$
- $y^2=40 x^6+44 x^5+51 x^4+11 x^3+42 x^2+31 x+33$
- $y^2=46 x^6+11 x^5+9 x^4+16 x^3+9 x^2+11 x+46$
- $y^2=39 x^6+22 x^5+18 x^4+32 x^3+18 x^2+22 x+39$
- and 430 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{53^{2}}$.
Endomorphism algebra over $\F_{53}$| The isogeny class factors as 1.53.aj $\times$ 1.53.j and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
| The base change of $A$ to $\F_{53^{2}}$ is 1.2809.z 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-131}) \)$)$ |
Base change
This is a primitive isogeny class.