Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 126 x^{2} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.415712954732$, $\pm0.584287045268$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{5}, \sqrt{-17})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $298$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5456$ | $29767936$ | $151334212304$ | $806163811864576$ | $4297625826052400336$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $74$ | $5582$ | $389018$ | $28387806$ | $2073071594$ | $151334198318$ | $11047398519098$ | $806460151031998$ | $58871586708267914$ | $4297625822401243022$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 298 curves (of which all are hyperelliptic):
- $y^2=54 x^6+39 x^5+64 x^4+33 x^3+65 x^2+17 x+15$
- $y^2=51 x^6+49 x^5+28 x^4+19 x^3+33 x^2+12 x+2$
- $y^2=19 x^6+6 x^5+31 x^4+34 x^3+41 x^2+39 x+10$
- $y^2=22 x^6+30 x^5+9 x^4+24 x^3+59 x^2+49 x+50$
- $y^2=6 x^6+34 x^5+31 x^3+41 x^2+46 x+22$
- $y^2=15 x^6+56 x^5+4 x^4+69 x^3+22 x^2+7 x+14$
- $y^2=2 x^6+61 x^5+20 x^4+53 x^3+37 x^2+35 x+70$
- $y^2=59 x^6+17 x^5+66 x^4+52 x^3+46 x^2+54 x+34$
- $y^2=3 x^6+12 x^5+38 x^4+41 x^3+11 x^2+51 x+24$
- $y^2=26 x^6+71 x^5+37 x^4+16 x^3+32 x^2+61 x+50$
- $y^2=57 x^6+63 x^5+39 x^4+7 x^3+14 x^2+13 x+31$
- $y^2=7 x^6+7 x^5+29 x^4+28 x^3+57 x^2+28 x+36$
- $y^2=35 x^6+35 x^5+72 x^4+67 x^3+66 x^2+67 x+34$
- $y^2=69 x^6+68 x^5+37 x^4+16 x^3+22 x^2+36 x+58$
- $y^2=53 x^6+48 x^5+39 x^4+7 x^3+37 x^2+34 x+71$
- $y^2=8 x^6+43 x^5+16 x^4+43 x^3+40 x^2+23 x+15$
- $y^2=40 x^6+69 x^5+7 x^4+69 x^3+54 x^2+42 x+2$
- $y^2=43 x^6+51 x^5+32 x^4+35 x^3+51 x^2+41 x+49$
- $y^2=69 x^6+36 x^5+14 x^4+29 x^3+36 x^2+59 x+26$
- $y^2=51 x^6+x^5+10 x^4+28 x^3+6 x^2+24 x+46$
- and 278 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 \(\Q(\sqrt{5}, \sqrt{-17})\). |
| The base change of $A$ to $\F_{73^{2}}$ is 1.5329.ew 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-85}) \)$)$ |
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_aew | $4$ | (not in LMFDB) |