Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 9 x + 91 x^{2} - 657 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.219762022329$, $\pm0.578559616360$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-786 +18 \sqrt{301}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $144$ |
| Isomorphism classes: | 144 |
| Cyclic group of points: | yes |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4755$ | $28943685$ | $151239969315$ | $806574393487125$ | $4297983769551212400$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $65$ | $5431$ | $388775$ | $28402267$ | $2073244250$ | $151334716039$ | $11047391154515$ | $806460073031443$ | $58871586610362485$ | $4297625823090505486$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 144 curves (of which all are hyperelliptic):
- $y^2=62 x^6+63 x^5+26 x^4+37 x^3+29 x^2+12 x+3$
- $y^2=44 x^6+69 x^5+21 x^4+19 x^3+46 x^2+72 x+58$
- $y^2=69 x^6+5 x^5+72 x^4+11 x^3+37 x^2+67 x+49$
- $y^2=10 x^6+28 x^5+43 x^4+11 x^3+8 x^2+62 x+66$
- $y^2=2 x^6+46 x^5+29 x^4+68 x^3+35 x^2+15 x+45$
- $y^2=32 x^6+60 x^5+45 x^4+x^3+3 x^2+66 x+2$
- $y^2=21 x^6+69 x^5+53 x^4+18 x^3+7 x^2+20 x+4$
- $y^2=51 x^6+16 x^5+25 x^4+69 x^3+61 x^2+37 x+2$
- $y^2=42 x^6+26 x^5+27 x^4+38 x^3+50 x^2+32 x+9$
- $y^2=36 x^6+49 x^5+6 x^4+24 x^3+58 x^2+71 x+51$
- $y^2=51 x^6+50 x^5+3 x^4+38 x^3+51 x^2+38 x+47$
- $y^2=28 x^6+56 x^5+27 x^4+x^3+24 x^2+40 x+31$
- $y^2=10 x^6+10 x^5+51 x^4+33 x^3+59 x^2+9 x+26$
- $y^2=47 x^6+39 x^5+42 x^4+68 x^3+52 x^2+51 x+7$
- $y^2=43 x^6+69 x^5+51 x^4+48 x^3+65 x^2+39 x+12$
- $y^2=55 x^6+38 x^5+34 x^4+43 x^3+69 x^2+23 x+20$
- $y^2=8 x^6+12 x^5+5 x^4+72 x^3+17 x^2+43 x+14$
- $y^2=61 x^6+71 x^5+24 x^4+17 x^3+27 x^2+6 x+43$
- $y^2=18 x^6+7 x^5+6 x^4+3 x^3+51 x^2+7 x+54$
- $y^2=43 x^6+27 x^5+9 x^4+12 x^3+12 x^2+47 x+30$
- and 124 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 \(\Q(\sqrt{-786 +18 \sqrt{301}})\). |
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_dn | $2$ | (not in LMFDB) |