Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 3 x + 20 x^{2} + 219 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.305021456133$, $\pm0.770192961354$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.20247768.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $240$ |
| Isomorphism classes: | 240 |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5572$ | $28573216$ | $151530227968$ | $806986367623296$ | $4297442498200214692$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $77$ | $5361$ | $389522$ | $28416769$ | $2072983157$ | $151333845486$ | $11047394687021$ | $806460031643713$ | $58871587520337410$ | $4297625831340885921$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 240 curves (of which all are hyperelliptic):
- $y^2=65 x^6+40 x^4+53 x^3+50 x^2+3 x+58$
- $y^2=63 x^6+34 x^5+25 x^4+32 x^3+11 x^2+34 x+35$
- $y^2=3 x^6+48 x^5+58 x^4+20 x^3+15 x^2+57$
- $y^2=72 x^6+22 x^5+70 x^4+37 x^3+69 x^2+42 x+48$
- $y^2=69 x^6+x^5+51 x^4+47 x^3+21 x^2+14 x+10$
- $y^2=41 x^6+40 x^5+60 x^4+65 x^3+16 x^2+42 x+37$
- $y^2=14 x^6+36 x^5+35 x^4+50 x^3+21 x^2+62 x+51$
- $y^2=61 x^6+25 x^5+50 x^4+53 x^3+47 x^2+48 x+41$
- $y^2=35 x^6+39 x^5+48 x^4+53 x^3+69 x^2+41 x+60$
- $y^2=68 x^6+3 x^5+35 x^4+19 x^3+15 x^2+57 x+8$
- $y^2=29 x^6+28 x^5+32 x^4+49 x^3+17 x^2+10 x+19$
- $y^2=37 x^6+44 x^5+5 x^4+34 x^3+21 x^2+18 x+4$
- $y^2=33 x^6+34 x^5+4 x^4+40 x^3+2 x^2+12 x+50$
- $y^2=35 x^6+28 x^5+9 x^4+39 x^3+51 x^2+34 x+41$
- $y^2=69 x^6+53 x^5+33 x^3+24 x^2+31 x+54$
- $y^2=70 x^6+72 x^5+67 x^4+51 x^3+69 x^2+35 x+45$
- $y^2=70 x^6+61 x^5+46 x^4+63 x^3+9 x^2+9 x+49$
- $y^2=59 x^6+66 x^5+58 x^4+69 x^3+45 x^2+52 x+59$
- $y^2=9 x^6+57 x^5+51 x^4+49 x^3+47 x^2+48 x+35$
- $y^2=46 x^6+61 x^5+30 x^4+62 x^3+49 x^2+25 x+14$
- and 220 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 4.0.20247768.1. |
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.ad_u | $2$ | (not in LMFDB) |