Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 98 x^{2} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.367117472975$, $\pm0.632882527025$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{3}, \sqrt{-61})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $352$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5428$ | $29463184$ | $151333600756$ | $806520013295616$ | $4297625827579842868$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $74$ | $5526$ | $389018$ | $28400350$ | $2073071594$ | $151332975222$ | $11047398519098$ | $806460203265214$ | $58871586708267914$ | $4297625825456128086$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 352 curves (of which all are hyperelliptic):
- $y^2=16 x^6+37 x^5+18 x^4+32 x^3+68 x^2+54 x+31$
- $y^2=61 x^6+70 x^5+38 x^4+37 x^3+64 x^2+16 x+35$
- $y^2=13 x^6+58 x^5+44 x^4+39 x^3+28 x^2+7 x+29$
- $y^2=9 x^6+61 x^5+31 x^4+34 x^3+6 x^2+37 x+22$
- $y^2=45 x^6+13 x^5+9 x^4+24 x^3+30 x^2+39 x+37$
- $y^2=56 x^6+33 x^5+10 x^4+59 x^3+24 x^2+70 x+70$
- $y^2=61 x^6+19 x^5+50 x^4+3 x^3+47 x^2+58 x+58$
- $y^2=6 x^6+45 x^5+19 x^4+49 x^3+17 x^2+28 x+21$
- $y^2=30 x^6+6 x^5+22 x^4+26 x^3+12 x^2+67 x+32$
- $y^2=66 x^6+38 x^5+28 x^4+23 x^3+4 x^2+62 x+32$
- $y^2=38 x^6+44 x^5+67 x^4+42 x^3+20 x^2+18 x+14$
- $y^2=18 x^6+12 x^5+26 x^4+64 x^3+57 x^2+47 x+57$
- $y^2=17 x^6+60 x^5+57 x^4+28 x^3+66 x^2+16 x+66$
- $y^2=71 x^6+17 x^5+64 x^4+4 x^3+36 x^2+37 x+29$
- $y^2=9 x^6+6 x^5+62 x^4+46 x^3+61 x^2+50 x+32$
- $y^2=45 x^6+30 x^5+18 x^4+11 x^3+13 x^2+31 x+14$
- $y^2=72 x^6+8 x^5+51 x^4+36 x^3+54 x^2+12 x+7$
- $y^2=11 x^6+29 x^5+60 x^4+57 x^3+51 x^2+26 x+49$
- $y^2=55 x^6+72 x^5+8 x^4+66 x^3+36 x^2+57 x+26$
- $y^2=55 x^6+7 x^5+33 x^4+34 x^3+65 x+68$
- and 332 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 \(\Q(\sqrt{3}, \sqrt{-61})\). |
| The base change of $A$ to $\F_{73^{2}}$ is 1.5329.du 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-183}) \)$)$ |
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_adu | $4$ | (not in LMFDB) |
| 2.73.am_er | $12$ | (not in LMFDB) |
| 2.73.m_er | $12$ | (not in LMFDB) |