Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 4 x + 3 x^{2} + 292 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.298147693168$, $\pm0.809708448236$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-141 +28 \sqrt{3}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $126$ |
| Isomorphism classes: | 234 |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5629$ | $28353273$ | $151686351700$ | $806930548714329$ | $4297444738369097029$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $78$ | $5320$ | $389922$ | $28414804$ | $2072984238$ | $151334315350$ | $11047388771406$ | $806460067866724$ | $58871587273135026$ | $4297625829887896600$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 126 curves (of which all are hyperelliptic):
- $y^2=57 x^6+52 x^5+71 x^4+39 x^3+36 x+12$
- $y^2=50 x^6+38 x^5+65 x^4+68 x^3+29 x^2+35 x+20$
- $y^2=42 x^6+56 x^5+56 x^4+19 x^3+28 x^2+x+5$
- $y^2=19 x^6+2 x^5+21 x^4+41 x^3+22 x^2+10 x+69$
- $y^2=3 x^6+65 x^5+29 x^4+39 x^3+37 x^2+32 x+11$
- $y^2=6 x^6+63 x^5+53 x^4+31 x^3+45 x^2+61 x+70$
- $y^2=52 x^6+29 x^5+69 x^4+6 x^3+70 x^2+40 x+21$
- $y^2=54 x^6+3 x^5+30 x^4+8 x^3+43 x^2+46 x+8$
- $y^2=58 x^6+22 x^5+60 x^4+45 x^2+59 x+33$
- $y^2=6 x^6+72 x^5+34 x^4+12 x^3+29 x^2+72 x+22$
- $y^2=3 x^6+71 x^5+65 x^4+41 x^3+34 x^2+10 x+5$
- $y^2=72 x^6+20 x^5+64 x^4+13 x^3+68 x^2+29 x+21$
- $y^2=50 x^6+29 x^5+30 x^4+34 x^3+21 x^2+38 x+16$
- $y^2=64 x^6+53 x^5+21 x^4+22 x^3+2 x^2+31 x+27$
- $y^2=43 x^6+22 x^5+9 x^4+3 x^3+24 x^2+20 x+56$
- $y^2=62 x^6+46 x^5+19 x^4+9 x^3+63 x^2+15 x+64$
- $y^2=5 x^6+30 x^5+38 x^4+13 x^3+23 x^2+36 x+42$
- $y^2=7 x^6+40 x^5+50 x^4+40 x^3+50 x^2+61 x+20$
- $y^2=11 x^6+56 x^5+67 x^4+41 x^3+17 x^2+50 x+49$
- $y^2=28 x^6+41 x^5+31 x^4+8 x^3+47 x^2+58 x+67$
- and 106 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 \(\Q(\sqrt{-141 +28 \sqrt{3}})\). |
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.ae_d | $2$ | (not in LMFDB) |