Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 2 x + 73 x^{2} )^{2}$ |
| $1 - 4 x + 150 x^{2} - 292 x^{3} + 5329 x^{4}$ | |
| Frobenius angles: | $\pm0.462659059226$, $\pm0.462659059226$ |
| Angle rank: | $1$ (numerical) |
| Jacobians: | $112$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5184$ | $29942784$ | $151669744704$ | $805920331677696$ | $4297416862481100864$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $70$ | $5614$ | $389878$ | $28379230$ | $2072970790$ | $151335412558$ | $11047408250326$ | $806460024758974$ | $58871585863618054$ | $4297625832915120814$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 112 curves (of which all are hyperelliptic):
- $y^2=31 x^6+33 x^5+4 x^4+66 x^3+57 x^2+51 x+70$
- $y^2=54 x^6+30 x^4+30 x^2+54$
- $y^2=71 x^6+60 x^5+39 x^4+29 x^3+55 x^2+62 x+43$
- $y^2=52 x^6+15 x^5+42 x^4+59 x^3+4 x^2+22 x+41$
- $y^2=7 x^6+20 x^5+52 x^4+71 x^3+24 x^2+45 x+49$
- $y^2=12 x^6+21 x^4+21 x^2+12$
- $y^2=21 x^6+66 x^5+41 x^4+32 x^3+43 x^2+61 x+33$
- $y^2=48 x^6+65 x^5+69 x^4+5 x^3+16 x^2+69 x+9$
- $y^2=48 x^6+25 x^5+3 x^4+27 x^3+2 x^2+64 x+19$
- $y^2=49 x^6+56 x^5+71 x^4+28 x^3+23 x^2+33 x+1$
- $y^2=31 x^6+67 x^5+26 x^4+54 x^3+17 x^2+71 x+31$
- $y^2=42 x^6+2 x^5+19 x^4+12 x^3+47 x^2+21 x+61$
- $y^2=72 x^6+19 x^5+55 x^4+55 x^3+55 x^2+19 x+72$
- $y^2=48 x^6+27 x^5+19 x^4+58 x^3+19 x^2+27 x+48$
- $y^2=23 x^6+48 x^5+6 x^4+66 x^3+19 x^2+19 x+23$
- $y^2=66 x^6+14 x^5+38 x^4+43 x^3+38 x^2+14 x+66$
- $y^2=21 x^6+50 x^5+46 x^4+33 x^3+24 x^2+34 x+9$
- $y^2=62 x^6+12 x^5+10 x^4+55 x^3+45 x^2+24 x+47$
- $y^2=26 x^6+21 x^5+46 x^4+58 x^3+23 x^2+60 x+58$
- $y^2=48 x^5+33 x^4+36 x^3+17 x^2+34 x+58$
- and 92 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.ac 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-2}) \)$)$ |
Base change
This is a primitive isogeny class.