Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 70 x^{2} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.170417719542$, $\pm0.829582280458$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{6}, \sqrt{-19})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $304$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5260$ | $27667600$ | $151335002380$ | $806787216000000$ | $4297625827222708300$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $74$ | $5190$ | $389018$ | $28409758$ | $2073071594$ | $151335778470$ | $11047398519098$ | $806460139177918$ | $58871586708267914$ | $4297625824741858950$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 304 curves (of which all are hyperelliptic):
- $y^2=45 x^6+20 x^5+48 x^4+53 x^3+8 x^2+32 x+11$
- $y^2=6 x^6+27 x^5+21 x^4+46 x^3+40 x^2+14 x+55$
- $y^2=58 x^6+35 x^5+41 x^4+61 x^3+39 x^2+6 x+40$
- $y^2=71 x^6+29 x^5+59 x^4+13 x^3+49 x^2+30 x+54$
- $y^2=14 x^6+40 x^5+64 x^4+4 x^3+70 x^2+24 x+12$
- $y^2=70 x^6+54 x^5+28 x^4+20 x^3+58 x^2+47 x+60$
- $y^2=38 x^6+20 x^5+13 x^4+56 x^3+12 x^2+55 x+58$
- $y^2=44 x^6+27 x^5+65 x^4+61 x^3+60 x^2+56 x+71$
- $y^2=50 x^6+41 x^5+66 x^4+52 x^3+71 x^2+54 x+15$
- $y^2=59 x^6+38 x^5+24 x^4+x^3+6 x^2+50 x+35$
- $y^2=3 x^6+44 x^5+47 x^4+5 x^3+30 x^2+31 x+29$
- $y^2=20 x^6+68 x^5+41 x^4+19 x^3+52 x^2+29 x+6$
- $y^2=72 x^6+9 x^5+4 x^4+39 x^3+71 x^2+10 x+61$
- $y^2=68 x^6+45 x^5+20 x^4+49 x^3+63 x^2+50 x+13$
- $y^2=55 x^5+32 x^4+43 x^3+56 x^2+27 x$
- $y^2=10 x^6+65 x^5+8 x^4+57 x^3+9 x^2+60 x+43$
- $y^2=50 x^6+33 x^5+40 x^4+66 x^3+45 x^2+8 x+69$
- $y^2=39 x^6+21 x^5+x^4+31 x^3+10 x^2+56 x+18$
- $y^2=44 x^6+57 x^5+2 x^4+55 x^3+34 x^2+18 x+25$
- $y^2=x^6+66 x^5+10 x^4+56 x^3+24 x^2+17 x+52$
- and 284 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 \(\Q(\sqrt{6}, \sqrt{-19})\). |
| The base change of $A$ to $\F_{73^{2}}$ is 1.5329.acs 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-114}) \)$)$ |
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_cs | $4$ | (not in LMFDB) |