Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 6 x + 73 x^{2} )( 1 + 8 x + 73 x^{2} )$ |
| $1 + 2 x + 98 x^{2} + 146 x^{3} + 5329 x^{4}$ | |
| Frobenius angles: | $\pm0.385799748780$, $\pm0.655084565757$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $280$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5576$ | $29441280$ | $151278402248$ | $806530911436800$ | $4297564138141389896$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $76$ | $5522$ | $388876$ | $28400734$ | $2073041836$ | $151333039154$ | $11047404202540$ | $806460187931326$ | $58871586291118348$ | $4297625826622672082$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 280 curves (of which all are hyperelliptic):
- $y^2=61 x^6+36 x^5+71 x^4+34 x^3+50 x^2+9 x+41$
- $y^2=40 x^6+57 x^5+69 x^4+59 x^3+12 x^2+50 x+71$
- $y^2=6 x^6+48 x^5+10 x^4+13 x^3+72 x^2+26 x+33$
- $y^2=41 x^6+2 x^5+31 x^4+15 x^3+69 x^2+52 x+54$
- $y^2=69 x^6+57 x^5+59 x^4+27 x^3+8 x^2+15 x+7$
- $y^2=17 x^6+21 x^5+70 x^4+54 x^3+18 x^2+47 x+44$
- $y^2=2 x^6+26 x^5+31 x^4+61 x^3+26 x^2+52 x+16$
- $y^2=68 x^6+70 x^5+52 x^4+31 x^3+3 x^2+59 x+33$
- $y^2=72 x^6+16 x^5+26 x^4+15 x^3+69 x^2+60 x+39$
- $y^2=48 x^6+26 x^5+5 x^4+72 x^3+40 x^2+72 x+13$
- $y^2=26 x^6+24 x^5+70 x^4+62 x^3+11 x^2+52 x+32$
- $y^2=34 x^6+32 x^5+41 x^4+14 x^3+38 x^2+49 x+60$
- $y^2=20 x^6+3 x^5+15 x^4+54 x^3+19 x^2+20 x+54$
- $y^2=6 x^6+15 x^5+2 x^4+x^3+51 x^2+60 x+22$
- $y^2=42 x^6+50 x^5+48 x^4+18 x^3+48 x^2+50 x+42$
- $y^2=4 x^6+39 x^5+46 x^4+25 x^3+42 x^2+56 x+69$
- $y^2=42 x^6+56 x^5+59 x^4+22 x^3+58 x^2+26 x+34$
- $y^2=2 x^6+39 x^5+59 x^4+44 x^3+64 x^2+64 x+52$
- $y^2=26 x^6+10 x^5+46 x^4+38 x^3+53 x^2+17 x+5$
- $y^2=68 x^6+52 x^5+31 x^4+68 x^3+61 x^2+34 x+18$
- and 260 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.ag $\times$ 1.73.i 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.