Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 8 x + 67 x^{2} )( 1 + 16 x + 67 x^{2} )$ |
| $1 + 8 x + 6 x^{2} + 536 x^{3} + 4489 x^{4}$ | |
| Frobenius angles: | $\pm0.337479373807$, $\pm0.932131395335$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $232$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5040$ | $19918080$ | $91054257840$ | $406030857523200$ | $1822830687942289200$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $76$ | $4438$ | $302740$ | $20149294$ | $1350119836$ | $90457609606$ | $6060709927012$ | $406067706650206$ | $27206534611376620$ | $1822837807024161718$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 232 curves (of which all are hyperelliptic):
- $y^2=49 x^6+6 x^5+45 x^4+5 x^3+31 x^2+12 x+4$
- $y^2=60 x^6+8 x^5+55 x^4+5 x^3+37 x^2+62 x+35$
- $y^2=5 x^6+66 x^5+65 x^4+34 x^3+48 x^2+64 x+42$
- $y^2=10 x^6+13 x^5+9 x^4+x^3+38 x^2+61 x+12$
- $y^2=9 x^6+47 x^5+3 x^4+40 x^3+20 x^2+3 x+55$
- $y^2=50 x^6+x^5+37 x^4+17 x^3+51 x^2+57 x+34$
- $y^2=30 x^6+48 x^5+40 x^4+45 x^3+51 x^2+22 x+11$
- $y^2=27 x^6+x^5+57 x^4+18 x^3+54 x^2+51 x+60$
- $y^2=43 x^6+34 x^5+17 x^4+53 x^3+65 x^2+32 x+27$
- $y^2=58 x^6+61 x^5+55 x^4+57 x^3+46 x^2+66 x+62$
- $y^2=10 x^6+11 x^5+28 x^4+x^3+30 x^2+48 x+17$
- $y^2=22 x^6+10 x^5+6 x^4+8 x^3+56 x^2+10 x+10$
- $y^2=59 x^6+31 x^5+55 x^4+35 x^3+2 x^2+28 x+6$
- $y^2=25 x^6+28 x^4+29 x^2+39 x+37$
- $y^2=31 x^6+4 x^5+29 x^4+41 x^3+30 x^2+5$
- $y^2=9 x^6+57 x^5+44 x^4+53 x^3+58 x^2+9 x+14$
- $y^2=12 x^6+30 x^5+49 x^4+41 x^3+9 x^2+40 x+30$
- $y^2=63 x^6+40 x^5+17 x^4+51 x^3+25 x^2+7 x+48$
- $y^2=66 x^6+66 x^5+55 x^4+24 x^3+18 x^2+34 x+16$
- $y^2=50 x^6+16 x^5+5 x^4+14 x^3+5 x^2+16 x+50$
- and 212 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67}$.
Endomorphism algebra over $\F_{67}$| The isogeny class factors as 1.67.ai $\times$ 1.67.q and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
Base change
This is a primitive isogeny class.