Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 16 x + 142 x^{2} - 1168 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.100327985627$, $\pm0.504586502396$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-14 +2 \sqrt{17}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $224$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4288$ | $28540928$ | $151030053568$ | $806065674911744$ | $4297640395107652288$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $58$ | $5358$ | $388234$ | $28384350$ | $2073078618$ | $151335246414$ | $11047401795754$ | $806460081697470$ | $58871587233910906$ | $4297625837952657838$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 224 curves (of which all are hyperelliptic):
- $y^2=30 x^6+69 x^5+69 x^4+45 x^3+7 x^2+59 x+2$
- $y^2=33 x^6+51 x^5+51 x^4+33 x^3+35 x^2+8 x+26$
- $y^2=23 x^6+70 x^5+37 x^4+19 x^3+22 x^2+17 x+11$
- $y^2=65 x^6+38 x^5+29 x^4+24 x^3+40 x^2+22 x+8$
- $y^2=37 x^6+35 x^5+37 x^4+64 x^3+3 x^2+26 x+70$
- $y^2=39 x^6+57 x^5+25 x^4+66 x^3+28 x^2+33 x+50$
- $y^2=59 x^6+19 x^5+10 x^4+11 x^3+43 x^2+29 x+44$
- $y^2=66 x^6+29 x^5+56 x^4+44 x^3+53 x^2+45 x+42$
- $y^2=24 x^6+70 x^5+9 x^4+31 x^3+27 x^2+32 x+28$
- $y^2=32 x^6+2 x^5+5 x^4+63 x^3+29 x^2+47 x+55$
- $y^2=4 x^6+x^5+65 x^4+4 x^3+10 x^2+32 x+35$
- $y^2=33 x^6+36 x^5+59 x^4+28 x^3+60 x^2+40 x+44$
- $y^2=56 x^6+26 x^5+63 x^4+64 x^3+27 x^2+15 x+46$
- $y^2=47 x^6+63 x^5+56 x^4+x^3+32 x^2+66 x+56$
- $y^2=58 x^6+33 x^5+59 x^4+59 x^3+15 x^2+41 x+2$
- $y^2=49 x^6+49 x^5+15 x^4+46 x^3+55 x^2+64 x+58$
- $y^2=25 x^6+49 x^5+70 x^4+17 x^3+41 x^2+11 x+62$
- $y^2=58 x^6+28 x^5+44 x^4+13 x^3+68 x^2+53 x+70$
- $y^2=5 x^6+54 x^5+26 x^4+5 x^3+67 x^2+42 x+29$
- $y^2=27 x^6+47 x^5+41 x^4+64 x^3+61 x^2+2 x+29$
- and 204 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 \(\Q(\sqrt{-14 +2 \sqrt{17}})\). |
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.q_fm | $2$ | (not in LMFDB) |