Invariants
| Base field: | $\F_{61}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 8 x + 70 x^{2} + 488 x^{3} + 3721 x^{4}$ |
| Frobenius angles: | $\pm0.412369232838$, $\pm0.786815261971$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.95948.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $252$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4288$ | $14133248$ | $51587731648$ | $191752898772992$ | $713246706942102208$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $70$ | $3798$ | $227278$ | $13849134$ | $844482390$ | $51520627974$ | $3142746073054$ | $191707312687710$ | $11694146168822374$ | $713342908553284918$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 252 curves (of which all are hyperelliptic):
- $y^2=5 x^6+36 x^5+22 x^4+8 x^3+50 x^2+41 x+56$
- $y^2=22 x^6+48 x^5+40 x^4+49 x^3+28 x^2+16 x$
- $y^2=6 x^6+7 x^5+14 x^4+55 x^3+55 x^2+9 x+13$
- $y^2=30 x^6+39 x^5+7 x^4+44 x^3+6 x^2+10 x+35$
- $y^2=39 x^6+7 x^5+13 x^4+22 x^3+53 x^2+40 x+35$
- $y^2=39 x^6+50 x^5+12 x^4+59 x^3+21 x^2+47 x+58$
- $y^2=17 x^6+35 x^5+37 x^4+42 x^3+59 x^2+36 x+43$
- $y^2=26 x^6+15 x^5+53 x^4+43 x^3+17 x^2+35 x+3$
- $y^2=48 x^6+11 x^5+18 x^4+60 x^3+60 x^2+38 x+9$
- $y^2=12 x^6+58 x^5+52 x^4+5 x^3+46 x^2+9 x+23$
- $y^2=25 x^6+46 x^5+43 x^4+20 x^3+38 x^2+50 x+52$
- $y^2=55 x^6+26 x^5+43 x^4+59 x^3+36 x^2+48 x+31$
- $y^2=27 x^6+5 x^5+18 x^4+40 x^3+2 x^2+31 x+4$
- $y^2=13 x^6+19 x^5+58 x^4+21 x^3+4 x^2+30 x+22$
- $y^2=55 x^6+32 x^5+45 x^4+22 x^3+22 x^2+25 x+8$
- $y^2=26 x^6+37 x^5+59 x^4+17 x^3+32 x^2+44 x+30$
- $y^2=12 x^6+57 x^5+53 x^4+60 x^3+43 x^2+52 x+42$
- $y^2=2 x^6+51 x^5+42 x^4+46 x^3+28 x^2+25 x+13$
- $y^2=7 x^6+8 x^5+52 x^4+16 x^3+42 x^2+17 x$
- $y^2=32 x^6+2 x^5+46 x^4+24 x^3+36 x^2+2 x+57$
- and 232 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{61}$.
Endomorphism algebra over $\F_{61}$| The endomorphism algebra of this simple isogeny class is 4.0.95948.1. |
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 |
|---|---|---|
| 2.61.ai_cs | $2$ | (not in LMFDB) |