Invariants
| Base field: | $\F_{61}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 + 2 x + 61 x^{2} )( 1 + 14 x + 61 x^{2} )$ |
| $1 + 16 x + 150 x^{2} + 976 x^{3} + 3721 x^{4}$ | |
| Frobenius angles: | $\pm0.540867587811$, $\pm0.853724980602$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $224$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4864$ | $14008320$ | $51480814336$ | $191644800122880$ | $713339682271554304$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $78$ | $3766$ | $226806$ | $13841326$ | $844592478$ | $51521120998$ | $3142736525958$ | $191707322499166$ | $11694146172825966$ | $713342912338120726$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 224 curves (of which all are hyperelliptic):
- $y^2=12 x^6+37 x^5+14 x^4+55 x^3+22 x^2+54 x+9$
- $y^2=13 x^6+38 x^5+39 x^4+52 x^3+30 x^2+11 x+8$
- $y^2=45 x^6+29 x^5+35 x^4+45 x^3+22 x^2+2 x+5$
- $y^2=57 x^6+57 x^5+36 x^4+27 x^3+46 x^2+33 x+3$
- $y^2=42 x^6+6 x^5+51 x^4+3 x^3+22 x^2+57 x+46$
- $y^2=33 x^6+58 x^5+58 x^4+x^3+48 x^2+38 x+58$
- $y^2=5 x^6+6 x^5+53 x^4+45 x^3+17 x^2+40 x+5$
- $y^2=20 x^6+47 x^5+10 x^4+58 x^3+58 x^2+45 x+47$
- $y^2=5 x^6+6 x^5+15 x^4+49 x^3+42 x^2+18 x+41$
- $y^2=27 x^6+52 x^5+15 x^4+60 x^3+44 x^2+4$
- $y^2=53 x^6+48 x^5+2 x^4+10 x^3+2 x^2+48 x+53$
- $y^2=50 x^6+57 x^5+5 x^4+46 x^3+40 x^2+58 x$
- $y^2=60 x^6+37 x^5+4 x^4+43 x^3+4 x^2+37 x+60$
- $y^2=17 x^6+30 x^5+48 x^4+35 x^3+6 x^2+45 x+48$
- $y^2=57 x^6+54 x^5+12 x^4+30 x^3+3 x^2+60 x+25$
- $y^2=16 x^6+60 x^5+46 x^4+20 x^3+11 x^2+43 x+45$
- $y^2=46 x^6+18 x^5+37 x^4+17 x^3+41 x^2+33 x+53$
- $y^2=46 x^6+4 x^5+21 x^4+37 x^3+31 x^2+43 x+59$
- $y^2=19 x^6+31 x^5+14 x^4+60 x^3+19 x^2+60 x+28$
- $y^2=35 x^6+51 x^5+51 x^4+52 x^3+13 x^2+x+19$
- and 204 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{61}$.
Endomorphism algebra over $\F_{61}$| The isogeny class factors as 1.61.c $\times$ 1.61.o 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.