Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 3 x + 132 x^{2} + 219 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.452676811798$, $\pm0.604921750591$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-1094 -6 \sqrt{65}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $198$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
This isogeny class is simple and geometrically 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5684$ | $29784160$ | $151138378496$ | $806133904777600$ | $4297686285241482644$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $77$ | $5585$ | $388514$ | $28386753$ | $2073100757$ | $151334406830$ | $11047399329869$ | $806460120468673$ | $58871586320574482$ | $4297625825955135425$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 198 curves (of which all are hyperelliptic):
- $y^2=44 x^6+25 x^5+28 x^4+29 x^3+62 x^2+32 x+38$
- $y^2=48 x^6+34 x^5+42 x^4+16 x^3+48 x^2+20 x+18$
- $y^2=61 x^6+31 x^5+50 x^4+44 x^3+69 x^2+42 x+44$
- $y^2=25 x^6+23 x^5+40 x^4+13 x^3+19 x^2+4 x+61$
- $y^2=26 x^6+10 x^5+10 x^4+22 x^3+63 x^2+6 x+72$
- $y^2=38 x^6+55 x^5+21 x^4+21 x^3+37 x^2+41 x+56$
- $y^2=57 x^6+58 x^5+19 x^4+49 x^3+12 x^2+42 x+19$
- $y^2=52 x^6+52 x^5+7 x^4+36 x^3+44 x^2+67 x+44$
- $y^2=52 x^6+50 x^5+16 x^4+51 x^3+20 x^2+42 x+14$
- $y^2=53 x^6+13 x^5+50 x^4+47 x^3+58 x^2+59 x+49$
- $y^2=35 x^6+14 x^5+39 x^4+51 x^3+9 x^2+18 x+36$
- $y^2=9 x^6+13 x^5+70 x^4+7 x^3+47 x^2+45 x+50$
- $y^2=23 x^6+28 x^5+13 x^4+56 x^3+69 x^2+9 x+8$
- $y^2=68 x^6+5 x^5+72 x^4+14 x^3+38 x^2+35 x+22$
- $y^2=41 x^6+47 x^5+46 x^4+46 x^3+13 x^2+59 x+34$
- $y^2=17 x^6+12 x^5+6 x^4+21 x^3+13 x^2+2 x+8$
- $y^2=63 x^6+62 x^5+43 x^4+38 x^3+42 x^2+51 x+57$
- $y^2=64 x^6+52 x^5+5 x^4+28 x^3+55 x^2+62 x+41$
- $y^2=5 x^6+61 x^5+12 x^4+72 x^3+31 x^2+5 x+49$
- $y^2=43 x^6+22 x^5+52 x^4+26 x^3+31 x^2+19 x+25$
- and 178 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{73}$.
Endomorphism algebra over $\F_{73}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-1094 -6 \sqrt{65}})\). |
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.ad_fc | $2$ | (not in LMFDB) |