Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 8 x - 2 x^{2} + 584 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.327663152701$, $\pm0.942116220410$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-14 +2 \sqrt{41}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $174$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5920$ | $28037120$ | $152235742240$ | $806403645440000$ | $4297662334349677600$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $82$ | $5262$ | $391330$ | $28396254$ | $2073089202$ | $151333093614$ | $11047396456066$ | $806460106443966$ | $58871587155392530$ | $4297625833396501582$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 174 curves (of which all are hyperelliptic):
- $y^2=44 x^6+71 x^5+6 x^4+27 x^3+54 x+65$
- $y^2=51 x^6+6 x^5+52 x^4+71 x^3+43 x^2+36 x+59$
- $y^2=37 x^6+7 x^5+59 x^4+64 x^3+67 x^2+56 x+42$
- $y^2=39 x^6+54 x^5+32 x^4+14 x^3+17 x^2+37 x+35$
- $y^2=36 x^6+31 x^5+43 x^4+36 x^3+46 x^2+66 x+37$
- $y^2=39 x^6+39 x^5+50 x^4+9 x^3+5 x^2+49 x+62$
- $y^2=63 x^6+71 x^5+44 x^4+4 x^3+15 x^2+67 x+31$
- $y^2=41 x^6+37 x^5+61 x^4+65 x^3+11 x^2+27 x+6$
- $y^2=2 x^6+29 x^5+57 x^4+5 x^3+31 x^2+43 x+36$
- $y^2=25 x^6+57 x^5+60 x^4+13 x^3+28 x^2+65 x+39$
- $y^2=62 x^6+51 x^5+48 x^4+35 x^3+66 x+48$
- $y^2=34 x^6+23 x^5+18 x^4+68 x^3+34 x^2+7 x+63$
- $y^2=4 x^6+18 x^5+41 x^4+42 x^3+35 x^2+51 x+12$
- $y^2=62 x^6+69 x^5+24 x^4+48 x^3+64 x^2+57 x+57$
- $y^2=33 x^6+52 x^5+4 x^4+61 x^3+28 x^2+5 x+52$
- $y^2=6 x^6+60 x^5+29 x^4+39 x^3+48 x^2+10 x+26$
- $y^2=52 x^6+20 x^5+39 x^4+65 x^3+44 x^2+42 x+30$
- $y^2=31 x^6+41 x^5+72 x^4+39 x^3+3 x^2+42 x+41$
- $y^2=65 x^6+12 x^5+71 x^4+66 x^3+28 x^2+50 x+22$
- $y^2=26 x^6+2 x^5+33 x^4+46 x^3+10 x^2+27 x+56$
- and 154 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 \(\Q(\sqrt{-14 +2 \sqrt{41}})\). |
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_ac | $2$ | (not in LMFDB) |