Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 47 x^{2} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.197836262454$, $\pm0.802163737546$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{-11}, \sqrt{193})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $231$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $3$ |
This isogeny class is simple but not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5283$ | $27910089$ | $151334873856$ | $806940093569481$ | $4297625825566989843$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $74$ | $5236$ | $389018$ | $28415140$ | $2073071594$ | $151335521422$ | $11047398519098$ | $806460062715844$ | $58871586708267914$ | $4297625821430422036$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 231 curves (of which all are hyperelliptic):
- $y^2=9 x^6+54 x^5+28 x^4+6 x^3+10 x^2+18 x+19$
- $y^2=45 x^6+51 x^5+67 x^4+30 x^3+50 x^2+17 x+22$
- $y^2=x^6+4 x^5+29 x^4+4 x^3+63 x^2+56 x+23$
- $y^2=5 x^6+20 x^5+72 x^4+20 x^3+23 x^2+61 x+42$
- $y^2=27 x^6+54 x^5+59 x^4+55 x^3+53 x^2+52 x+34$
- $y^2=62 x^6+51 x^5+3 x^4+56 x^3+46 x^2+41 x+24$
- $y^2=65 x^6+64 x^5+48 x^4+69 x^3+27 x^2+31 x+13$
- $y^2=33 x^6+28 x^5+21 x^4+53 x^3+62 x^2+9 x+65$
- $y^2=41 x^6+31 x^5+60 x^4+38 x^3+67 x^2+9 x+7$
- $y^2=59 x^6+9 x^5+8 x^4+44 x^3+43 x^2+45 x+35$
- $y^2=14 x^6+30 x^5+65 x^4+66 x^3+65 x^2+56 x+36$
- $y^2=70 x^6+4 x^5+33 x^4+38 x^3+33 x^2+61 x+34$
- $y^2=15 x^6+16 x^5+69 x^4+49 x^3+65 x^2+41 x+3$
- $y^2=2 x^6+7 x^5+53 x^4+26 x^3+33 x^2+59 x+15$
- $y^2=67 x^6+9 x^5+22 x^4+9 x^3+68 x^2+6 x+14$
- $y^2=43 x^6+45 x^5+37 x^4+45 x^3+48 x^2+30 x+70$
- $y^2=23 x^6+8 x^5+63 x^4+24 x^3+10 x^2+16 x+50$
- $y^2=42 x^6+40 x^5+23 x^4+47 x^3+50 x^2+7 x+31$
- $y^2=34 x^6+47 x^5+24 x^4+3 x^3+56 x^2+64 x+12$
- $y^2=24 x^6+16 x^5+47 x^4+15 x^3+61 x^2+28 x+60$
- and 211 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{73^{2}}$.
Endomorphism algebra over $\F_{73}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-11}, \sqrt{193})\). |
| The base change of $A$ to $\F_{73^{2}}$ is 1.5329.abv 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-2123}) \)$)$ |
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 |
|---|---|---|
| 2.73.a_bv | $4$ | (not in LMFDB) |