Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 14 x + 67 x^{2} )( 1 + 14 x + 67 x^{2} )$ |
| $1 - 62 x^{2} + 4489 x^{4}$ | |
| Frobenius angles: | $\pm0.173442769152$, $\pm0.826557230848$ |
| Angle rank: | $1$ (numerical) |
| Jacobians: | $246$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2, 3$ |
This isogeny class is not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4428$ | $19607184$ | $90458978796$ | $406274655937536$ | $1822837802738053068$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $68$ | $4366$ | $300764$ | $20161390$ | $1350125108$ | $90459575422$ | $6060711605324$ | $406067705445214$ | $27206534396294948$ | $1822837800924344686$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 246 curves (of which all are hyperelliptic):
- $y^2=7 x^6+65 x^5+17 x^4+21 x^3+16 x^2+50 x+38$
- $y^2=14 x^6+63 x^5+34 x^4+42 x^3+32 x^2+33 x+9$
- $y^2=12 x^6+4 x^5+3 x^4+3 x^3+16 x^2+17 x+4$
- $y^2=44 x^6+37 x^5+48 x^4+66 x^3+31 x^2+47 x+13$
- $y^2=21 x^6+7 x^5+29 x^4+65 x^3+62 x^2+27 x+26$
- $y^2=x^6+56 x^5+33 x^4+63 x^3+44 x^2+8 x+14$
- $y^2=2 x^6+45 x^5+66 x^4+59 x^3+21 x^2+16 x+28$
- $y^2=27 x^6+28 x^5+25 x^4+61 x^3+15 x^2+33 x+57$
- $y^2=54 x^6+56 x^5+50 x^4+55 x^3+30 x^2+66 x+47$
- $y^2=29 x^5+14 x^4+56 x^3+58 x^2+26 x$
- $y^2=54 x^6+42 x^5+64 x^4+31 x^3+5 x^2+5 x+18$
- $y^2=50 x^6+27 x^5+29 x^4+31 x^3+46 x^2+52 x+54$
- $y^2=26 x^6+64 x^5+53 x^4+42 x^3+43 x^2+23 x+50$
- $y^2=52 x^6+61 x^5+39 x^4+17 x^3+19 x^2+46 x+33$
- $y^2=12 x^6+19 x^5+5 x^4+8 x^3+54 x^2+56 x+19$
- $y^2=24 x^6+38 x^5+10 x^4+16 x^3+41 x^2+45 x+38$
- $y^2=66 x^6+64 x^5+16 x^4+27 x^3+22 x^2+21 x+1$
- $y^2=65 x^6+61 x^5+32 x^4+54 x^3+44 x^2+42 x+2$
- $y^2=19 x^6+63 x^5+28 x^4+15 x^3+15 x^2+15 x+10$
- $y^2=38 x^6+59 x^5+56 x^4+30 x^3+30 x^2+30 x+20$
- and 226 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67^{2}}$.
Endomorphism algebra over $\F_{67}$| The isogeny class factors as 1.67.ao $\times$ 1.67.o and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
| The base change of $A$ to $\F_{67^{2}}$ is 1.4489.ack 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-2}) \)$)$ |
Base change
This is a primitive isogeny class.