Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 4 x + 66 x^{2} - 268 x^{3} + 4489 x^{4}$ |
| Frobenius angles: | $\pm0.278731085794$, $\pm0.629654535907$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.571392.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $336$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2, 3$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4284$ | $20683152$ | $90435141468$ | $406247550879744$ | $1822958990663412924$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $64$ | $4606$ | $300688$ | $20160046$ | $1350214864$ | $90457611118$ | $6060705330016$ | $406067687339614$ | $27206534240040544$ | $1822837805060537566$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 336 curves (of which all are hyperelliptic):
- $y^2=11 x^6+60 x^5+41 x^4+14 x^3+59 x^2+48 x+28$
- $y^2=55 x^6+33 x^5+30 x^4+62 x^3+11 x^2+6 x+43$
- $y^2=32 x^6+51 x^5+59 x^4+34 x^3+30 x^2+50 x+53$
- $y^2=61 x^6+16 x^5+5 x^4+20 x^3+8 x^2+49 x+44$
- $y^2=31 x^6+54 x^5+51 x^4+31 x^3+50 x$
- $y^2=32 x^6+53 x^5+46 x^4+8 x^3+61 x^2+48 x+39$
- $y^2=53 x^6+47 x^5+39 x^4+9 x^3+5 x^2+41 x+7$
- $y^2=3 x^6+62 x^5+18 x^4+28 x^3+26 x^2+26 x+14$
- $y^2=11 x^6+45 x^5+25 x^4+15 x^3+45 x^2+15 x+3$
- $y^2=28 x^6+50 x^5+37 x^4+41 x^3+51 x^2+37 x+61$
- $y^2=29 x^6+51 x^5+5 x^4+62 x^3+15 x^2+56 x+31$
- $y^2=44 x^6+12 x^5+30 x^4+23 x^3+21 x+25$
- $y^2=38 x^6+5 x^5+2 x^4+5 x^3+42 x^2+59 x+40$
- $y^2=16 x^6+38 x^5+10 x^4+37 x^3+6 x^2+53 x+2$
- $y^2=39 x^6+47 x^5+64 x^4+51 x^3+50 x^2+6 x+52$
- $y^2=35 x^6+6 x^5+9 x^4+29 x^3+17 x^2+56 x+10$
- $y^2=22 x^6+48 x^5+32 x^4+24 x^3+58 x^2+31 x+18$
- $y^2=50 x^6+43 x^5+28 x^4+13 x^3+x^2+31 x+34$
- $y^2=6 x^6+28 x^5+25 x^4+7 x^3+20 x^2+48 x+7$
- $y^2=36 x^6+47 x^5+14 x^4+25 x^3+19 x^2+7 x+63$
- and 316 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67}$.
Endomorphism algebra over $\F_{67}$| The endomorphism algebra of this simple isogeny class is 4.0.571392.1. |
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 |
|---|---|---|
| 2.67.e_co | $2$ | (not in LMFDB) |