Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 8 x + 73 x^{2} )( 1 + 16 x + 73 x^{2} )$ |
| $1 + 8 x + 18 x^{2} + 584 x^{3} + 5329 x^{4}$ | |
| Frobenius angles: | $\pm0.344915434243$, $\pm0.885799748780$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $260$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5940$ | $28250640$ | $152048419380$ | $806530911436800$ | $4297461664353491700$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $82$ | $5302$ | $390850$ | $28400734$ | $2072992402$ | $151333894294$ | $11047391382466$ | $806460187931326$ | $58871586684329170$ | $4297625834103396982$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 260 curves (of which all are hyperelliptic):
- $y^2=59 x^6+40 x^5+17 x^4+42 x^3+31 x^2+22 x+12$
- $y^2=62 x^6+42 x^5+24 x^4+x^3+16 x^2+29 x+65$
- $y^2=60 x^6+7 x^5+22 x^4+28 x^3+50 x^2+46 x+3$
- $y^2=20 x^6+68 x^5+6 x^4+2 x^3+6 x^2+9 x+9$
- $y^2=22 x^6+8 x^5+5 x^4+49 x^3+43 x^2+28 x+65$
- $y^2=72 x^6+51 x^5+66 x^4+50 x^3+51 x^2+3 x+57$
- $y^2=20 x^6+37 x^5+55 x^4+68 x^3+50 x^2+5 x+7$
- $y^2=39 x^6+15 x^4+41 x^3+46 x^2+53 x+16$
- $y^2=26 x^6+42 x^5+13 x^4+36 x^3+63 x^2+2 x+39$
- $y^2=43 x^6+44 x^5+67 x^4+56 x^3+71 x^2+71 x+18$
- $y^2=30 x^6+65 x^5+38 x^4+17 x^3+46 x^2+54 x+48$
- $y^2=63 x^6+55 x^5+12 x^4+61 x^3+56 x^2+40 x+60$
- $y^2=9 x^6+34 x^5+x^4+4 x^3+24 x^2+10 x+67$
- $y^2=39 x^6+13 x^5+29 x^4+10 x^3+53 x^2+68 x+18$
- $y^2=38 x^6+5 x^5+7 x^4+27 x^3+17 x^2+63 x+24$
- $y^2=45 x^6+53 x^5+55 x^4+54 x^3+65 x^2+2 x+20$
- $y^2=26 x^6+67 x^5+35 x^4+19 x^3+40 x^2+55 x+14$
- $y^2=14 x^6+7 x^5+31 x^4+49 x^3+64 x^2+3 x+6$
- $y^2=57 x^6+67 x^5+57 x^4+38 x^3+30 x^2+40 x+4$
- $y^2=61 x^6+26 x^5+72 x^4+32 x^3+53 x^2+25 x+17$
- and 240 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{73}$.
Endomorphism algebra over $\F_{73}$| The isogeny class factors as 1.73.ai $\times$ 1.73.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.