Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 2 x + 75 x^{2} + 146 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.355671773437$, $\pm0.687313933561$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.3051072.4 |
| Galois group: | $D_{4}$ |
| Jacobians: | $216$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $3$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5553$ | $29192121$ | $151331955264$ | $806746479039081$ | $4297518368705018673$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $76$ | $5476$ | $389014$ | $28408324$ | $2073019756$ | $151332796366$ | $11047403816140$ | $806460142385668$ | $58871586695020198$ | $4297625832789880996$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 216 curves (of which all are hyperelliptic):
- $y^2=53 x^6+3 x^5+64 x^4+23 x^3+2 x^2+38 x+32$
- $y^2=57 x^6+52 x^5+12 x^4+12 x^3+72 x^2+27 x+7$
- $y^2=70 x^6+67 x^5+39 x^4+4 x^3+29 x^2+23 x+3$
- $y^2=8 x^6+44 x^5+66 x^4+x^3+8 x^2+19 x+49$
- $y^2=46 x^6+4 x^5+22 x^4+13 x^3+51 x^2+31 x+53$
- $y^2=19 x^6+3 x^5+27 x^4+39 x^3+68 x^2+68 x+16$
- $y^2=45 x^6+53 x^5+24 x^4+15 x^3+15 x^2+68 x+25$
- $y^2=6 x^6+22 x^5+22 x^4+72 x^3+18 x^2+3 x+28$
- $y^2=50 x^6+22 x^5+70 x^4+68 x^3+71 x^2+71 x+18$
- $y^2=50 x^6+28 x^5+13 x^4+52 x^3+51 x^2+19 x+40$
- $y^2=45 x^6+56 x^5+22 x^4+22 x^3+22 x^2+8 x+42$
- $y^2=58 x^6+23 x^5+65 x^4+16 x^3+53 x^2+41 x+43$
- $y^2=59 x^6+42 x^5+35 x^4+13 x^3+24 x^2+58 x+67$
- $y^2=47 x^6+60 x^5+19 x^4+18 x^3+6 x^2+26 x+24$
- $y^2=60 x^6+42 x^5+22 x^4+56 x^3+31 x^2+23 x+29$
- $y^2=35 x^6+49 x^5+28 x^4+52 x^3+10 x^2+25 x+63$
- $y^2=53 x^6+65 x^5+70 x^4+42 x^3+9 x^2+69 x+55$
- $y^2=34 x^6+12 x^5+67 x^4+61 x^3+5 x^2+44 x+8$
- $y^2=65 x^6+19 x^5+55 x^4+58 x^3+4 x^2+6 x+49$
- $y^2=7 x^6+62 x^5+4 x^4+21 x^3+61 x^2+48 x+10$
- and 196 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 4.0.3051072.4. |
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.ac_cx | $2$ | (not in LMFDB) |