Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 11 x + 73 x^{2} )( 1 - 3 x + 73 x^{2} )$ |
| $1 - 14 x + 179 x^{2} - 1022 x^{3} + 5329 x^{4}$ | |
| Frobenius angles: | $\pm0.277387524567$, $\pm0.443825842026$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $180$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $3$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4473$ | $29275785$ | $152000126208$ | $806514648734025$ | $4297545699113247273$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $60$ | $5492$ | $390726$ | $28400164$ | $2073032940$ | $151334223374$ | $11047398259692$ | $806460039037636$ | $58871586217718358$ | $4297625832047594132$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 180 curves (of which all are hyperelliptic):
- $y^2=43 x^6+14 x^5+20 x^4+66 x^3+67 x^2+40 x+14$
- $y^2=71 x^6+24 x^5+68 x^4+28 x^3+19 x^2+23 x+33$
- $y^2=10 x^6+21 x^5+53 x^4+26 x^3+42 x^2+25 x+11$
- $y^2=13 x^6+70 x^5+67 x^4+14 x^3+27 x^2+44 x+17$
- $y^2=22 x^6+13 x^5+16 x^4+70 x^3+64 x^2+62 x+21$
- $y^2=10 x^6+43 x^5+5 x^4+31 x^3+31 x^2+36 x+68$
- $y^2=15 x^6+70 x^5+52 x^4+20 x^3+28 x^2+19 x+5$
- $y^2=42 x^6+68 x^5+63 x^4+x^3+51 x^2+5 x+40$
- $y^2=51 x^6+52 x^5+64 x^4+33 x^3+36 x^2+30 x+46$
- $y^2=43 x^6+14 x^5+40 x^4+51 x^3+14 x^2+5 x+51$
- $y^2=20 x^6+23 x^5+21 x^4+35 x^3+29 x^2+20 x+15$
- $y^2=40 x^6+60 x^5+53 x^4+49 x^3+32 x^2+37$
- $y^2=60 x^6+72 x^5+x^4+41 x^3+18 x^2+18 x+36$
- $y^2=44 x^6+8 x^5+70 x^4+33 x^3+16 x^2+41 x+14$
- $y^2=65 x^6+55 x^5+55 x^4+55 x^3+3 x^2+36 x+46$
- $y^2=17 x^6+62 x^5+52 x^4+41 x^3+22 x^2+20 x+26$
- $y^2=28 x^6+8 x^5+53 x^4+32 x^3+20 x^2+8 x+45$
- $y^2=43 x^6+31 x^5+34 x^4+21 x^3+62 x^2+47 x+15$
- $y^2=43 x^6+20 x^5+5 x^4+66 x^3+56 x^2+14 x+27$
- $y^2=x^6+24 x^5+2 x^4+19 x^3+20 x^2+57 x+3$
- and 160 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.al $\times$ 1.73.ad 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.
Twists
Below is a list of all twists of this isogeny class.
| Twist | Extension degree | Common base change |
|---|---|---|
| 2.73.ai_ej | $2$ | (not in LMFDB) |
| 2.73.i_ej | $2$ | (not in LMFDB) |
| 2.73.o_gx | $2$ | (not in LMFDB) |