Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 9 x + 108 x^{2} - 657 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.248703288359$, $\pm0.558676777158$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.554616424.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $222$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4772$ | $29128288$ | $151418461376$ | $806538642550144$ | $4297912401374420132$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $65$ | $5465$ | $389234$ | $28401009$ | $2073209825$ | $151334594030$ | $11047387566665$ | $806460029678689$ | $58871586836164322$ | $4297625828418452825$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 222 curves (of which all are hyperelliptic):
- $y^2=14 x^6+66 x^5+31 x^4+38 x^3+54 x^2+5 x+22$
- $y^2=53 x^6+40 x^5+22 x^4+45 x^3+60 x^2+49 x+45$
- $y^2=44 x^6+23 x^5+60 x^4+24 x^3+29 x^2+29 x+60$
- $y^2=52 x^6+11 x^5+x^4+11 x^3+12 x^2+56 x+14$
- $y^2=56 x^6+38 x^5+63 x^4+66 x^3+53 x^2+11 x+27$
- $y^2=21 x^6+42 x^5+39 x^4+53 x^3+55 x^2+6 x+40$
- $y^2=20 x^6+56 x^5+61 x^4+56 x^3+47 x^2+11 x+16$
- $y^2=40 x^6+57 x^5+52 x^4+31 x^3+41 x^2+49 x+63$
- $y^2=55 x^6+51 x^5+30 x^4+68 x^3+25 x^2+38 x+38$
- $y^2=14 x^6+48 x^5+34 x^4+35 x^3+58 x^2+69 x+22$
- $y^2=38 x^5+71 x^4+13 x^3+24 x^2+59 x+62$
- $y^2=60 x^6+66 x^5+70 x^4+7 x^3+46 x^2+43 x+2$
- $y^2=29 x^6+50 x^5+20 x^4+70 x^3+15 x^2+19 x+52$
- $y^2=17 x^6+9 x^5+22 x^4+55 x^3+59 x^2+22 x+27$
- $y^2=45 x^6+16 x^5+25 x^4+7 x^3+53 x^2+3 x+20$
- $y^2=21 x^6+29 x^5+43 x^4+47 x^3+23 x^2+53 x+14$
- $y^2=63 x^6+22 x^5+12 x^4+8 x^3+45 x^2+18 x+14$
- $y^2=71 x^6+x^5+55 x^4+62 x^3+39 x^2+36 x+21$
- $y^2=12 x^6+43 x^5+37 x^4+63 x^3+13 x^2+29 x+50$
- $y^2=59 x^6+56 x^5+51 x^4+4 x^3+29 x^2+50 x+45$
- and 202 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{73}$.
Endomorphism algebra over $\F_{73}$| The endomorphism algebra of this simple isogeny class is 4.0.554616424.1. |
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.j_ee | $2$ | (not in LMFDB) |