Invariants
| Base field: | $\F_{53}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 3 x + 92 x^{2} + 159 x^{3} + 2809 x^{4}$ |
| Frobenius angles: | $\pm0.444382880548$, $\pm0.624034545759$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-774 -6 \sqrt{65}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $72$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3064$ | $8395360$ | $22116148096$ | $62225232969600$ | $174890256446331544$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $57$ | $2985$ | $148554$ | $7886113$ | $418202157$ | $22164303030$ | $1174712305929$ | $62259703471393$ | $3299763435863202$ | $174887469609601425$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 72 curves (of which all are hyperelliptic):
- $y^2=31 x^6+42 x^5+28 x^4+36 x^3+8 x^2+41 x+39$
- $y^2=28 x^6+47 x^5+30 x^4+40 x^3+3 x^2+13 x+13$
- $y^2=11 x^6+10 x^5+50 x^4+26 x^3+34 x^2+27 x$
- $y^2=38 x^6+50 x^5+19 x^4+50 x^3+13 x^2+15 x+9$
- $y^2=9 x^6+51 x^5+28 x^4+19 x^3+28 x^2+43 x+34$
- $y^2=47 x^6+37 x^5+35 x^4+46 x^3+19 x^2+34 x+1$
- $y^2=30 x^6+28 x^5+48 x^4+41 x^3+15 x^2+28 x+25$
- $y^2=43 x^6+19 x^5+34 x^4+22 x^3+46 x^2+19 x+39$
- $y^2=12 x^6+6 x^5+19 x^4+7 x^3+13 x^2+49 x+14$
- $y^2=4 x^6+12 x^5+50 x^4+49 x^3+19 x^2+52 x+14$
- $y^2=8 x^6+48 x^5+39 x^4+42 x^3+12 x^2+6 x+40$
- $y^2=51 x^6+32 x^5+33 x^4+18 x^3+35 x^2+31 x+27$
- $y^2=14 x^6+3 x^5+30 x^4+28 x^3+46 x^2+46 x+38$
- $y^2=47 x^5+11 x^4+11 x^3+20 x^2+7 x+40$
- $y^2=37 x^6+52 x^5+10 x^4+16 x^3+31 x^2+29 x$
- $y^2=19 x^6+29 x^5+35 x^4+31 x^3+13 x^2+26 x+35$
- $y^2=22 x^6+31 x^5+40 x^4+8 x^3+8 x^2+44 x+19$
- $y^2=3 x^6+29 x^5+5 x^4+39 x^3+8 x^2+48 x+49$
- $y^2=41 x^6+16 x^5+41 x^4+44 x^3+20 x^2+2 x+10$
- $y^2=39 x^6+32 x^5+15 x^4+37 x^3+31 x^2+38 x+34$
- and 52 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 \(\Q(\sqrt{-774 -6 \sqrt{65}})\). |
Base change
This is a primitive isogeny class.
Twists
Below is a list of all twists of this isogeny class.
| Twist | Extension degree | Common base change |
|---|---|---|
| 2.53.ad_do | $2$ | (not in LMFDB) |