Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 8 x + 50 x^{2} + 584 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.374118234828$, $\pm0.825467009263$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.107408.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $384$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5972$ | $28593936$ | $151748812628$ | $806639967092736$ | $4297278576495900692$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $82$ | $5366$ | $390082$ | $28404574$ | $2072904082$ | $151334436566$ | $11047395844546$ | $806460166860478$ | $58871587012134610$ | $4297625823965681846$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 384 curves (of which all are hyperelliptic):
- $y^2=18 x^6+34 x^5+43 x^4+5 x^3+5 x^2+43 x+17$
- $y^2=22 x^6+46 x^5+45 x^4+49 x^3+58 x^2+28 x+64$
- $y^2=61 x^6+24 x^5+15 x^4+40 x^3+68 x^2+30 x+41$
- $y^2=67 x^6+40 x^5+47 x^4+15 x^3+44 x^2+38 x+15$
- $y^2=27 x^6+67 x^5+37 x^4+49 x^3+14 x^2+28 x+13$
- $y^2=9 x^6+30 x^5+66 x^4+33 x^3+35 x^2+26 x+16$
- $y^2=56 x^6+54 x^5+8 x^4+5 x^3+31 x^2+44 x+72$
- $y^2=40 x^6+32 x^5+3 x^4+58 x^3+49 x^2+37 x+56$
- $y^2=13 x^6+34 x^5+12 x^4+8 x^3+24 x^2+70 x+10$
- $y^2=62 x^6+5 x^5+66 x^4+10 x^3+21 x^2+66 x+52$
- $y^2=69 x^6+6 x^5+10 x^4+52 x^3+52 x^2+62 x+48$
- $y^2=20 x^6+27 x^5+20 x^4+5 x^3+17 x^2+2 x+51$
- $y^2=58 x^6+49 x^5+63 x^4+29 x^2+67 x+23$
- $y^2=16 x^6+11 x^5+52 x^3+43 x^2+17 x+6$
- $y^2=68 x^6+64 x^4+66 x^3+56 x^2+10 x+31$
- $y^2=29 x^6+4 x^5+14 x^4+5 x^3+28 x^2+46 x+50$
- $y^2=49 x^6+20 x^5+35 x^4+62 x^3+51 x^2+23 x+71$
- $y^2=10 x^6+21 x^5+26 x^4+67 x^3+24 x^2+28 x+63$
- $y^2=64 x^6+55 x^5+10 x^4+28 x^3+20 x^2+23 x+57$
- $y^2=54 x^6+47 x^5+32 x^4+19 x^3+2 x^2+35 x+70$
- and 364 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 4.0.107408.1. |
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.ai_by | $2$ | (not in LMFDB) |