Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 + 6 x + 73 x^{2} )( 1 + 10 x + 73 x^{2} )$ |
| $1 + 16 x + 206 x^{2} + 1168 x^{3} + 5329 x^{4}$ | |
| Frobenius angles: | $\pm0.614200251220$, $\pm0.698986253580$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $134$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6720$ | $29245440$ | $150446237760$ | $806661763891200$ | $4297812941128257600$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $90$ | $5486$ | $386730$ | $28405342$ | $2073161850$ | $151333160654$ | $11047400876490$ | $806460130441918$ | $58871586369568410$ | $4297625830107235886$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 134 curves (of which all are hyperelliptic):
- $y^2=71 x^6+23 x^5+40 x^4+45 x^3+63 x^2+7 x+62$
- $y^2=6 x^6+6 x^5+45 x^4+3 x^3+31 x^2+50 x+2$
- $y^2=63 x^6+24 x^4+41 x^3+24 x^2+63$
- $y^2=25 x^6+32 x^5+18 x^4+47 x^3+18 x^2+32 x+25$
- $y^2=22 x^6+55 x^5+21 x^4+3 x^3+21 x^2+55 x+22$
- $y^2=55 x^6+43 x^5+x^4+26 x^3+63 x^2+69 x+54$
- $y^2=32 x^6+16 x^5+56 x^4+66 x^3+56 x^2+16 x+32$
- $y^2=28 x^6+40 x^5+33 x^4+29 x^3+33 x^2+40 x+28$
- $y^2=23 x^6+43 x^5+4 x^4+9 x^3+x^2+62 x+38$
- $y^2=13 x^6+19 x^5+64 x^4+4 x^3+37 x^2+12 x+29$
- $y^2=4 x^6+40 x^5+62 x^4+49 x^3+62 x^2+40 x+4$
- $y^2=54 x^6+5 x^5+8 x^4+20 x^3+3 x^2+68 x+71$
- $y^2=44 x^6+18 x^5+54 x^4+56 x^3+54 x^2+18 x+44$
- $y^2=72 x^6+50 x^5+17 x^4+21 x^3+17 x^2+50 x+72$
- $y^2=68 x^6+43 x^5+46 x^4+16 x^3+36 x^2+44 x+47$
- $y^2=25 x^6+17 x^5+16 x^4+2 x^3+32 x^2+68 x+54$
- $y^2=38 x^6+30 x^5+44 x^4+18 x^3+44 x^2+30 x+38$
- $y^2=52 x^6+67 x^5+44 x^4+56 x^3+44 x^2+67 x+52$
- $y^2=69 x^6+20 x^5+23 x^4+60 x^3+6 x^2+40 x+36$
- $y^2=67 x^6+6 x^5+36 x^4+45 x^3+6 x^2+61 x+2$
- and 114 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.g $\times$ 1.73.k 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.