Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 13 x + 67 x^{2} )( 1 + 2 x + 67 x^{2} )$ |
| $1 - 11 x + 108 x^{2} - 737 x^{3} + 4489 x^{4}$ | |
| Frobenius angles: | $\pm0.207941879321$, $\pm0.538985133153$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $168$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $5$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3850$ | $20582100$ | $90465436600$ | $406064250900000$ | $1822993289389483750$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $57$ | $4585$ | $300786$ | $20150953$ | $1350240267$ | $90459256930$ | $6060708567201$ | $406067635294033$ | $27206534387272902$ | $1822837802850986425$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 168 curves (of which all are hyperelliptic):
- $y^2=24 x^6+44 x^5+64 x^4+4 x^3+36 x^2+3 x+66$
- $y^2=31 x^6+29 x^5+17 x^4+12 x^3+37 x^2+35 x+37$
- $y^2=50 x^6+45 x^5+22 x^4+7 x^3+15 x^2+51 x+7$
- $y^2=50 x^6+48 x^5+33 x^4+10 x^3+8 x^2+13 x+66$
- $y^2=19 x^6+30 x^5+53 x^4+66 x^3+8 x^2+63 x+54$
- $y^2=63 x^6+36 x^5+20 x^4+56 x^3+55 x^2+3 x+13$
- $y^2=23 x^6+51 x^5+9 x^4+56 x^3+22 x^2+28 x+13$
- $y^2=64 x^6+27 x^5+60 x^4+38 x^3+38 x^2+55 x+51$
- $y^2=59 x^6+53 x^5+50 x^4+36 x^3+38 x^2+23 x+28$
- $y^2=22 x^6+26 x^5+9 x^4+34 x^3+48 x^2+33 x+36$
- $y^2=17 x^6+18 x^5+22 x^4+47 x^3+24 x^2+66 x+9$
- $y^2=x^6+40 x^5+52 x^4+23 x^3+44 x^2+7 x+55$
- $y^2=61 x^6+27 x^5+28 x^3+18 x^2+39 x+57$
- $y^2=7 x^6+11 x^5+64 x^3+7 x^2+64 x+62$
- $y^2=57 x^6+x^5+35 x^4+36 x^3+18 x^2+27 x+10$
- $y^2=21 x^6+10 x^5+40 x^4+46 x^3+12 x^2+14 x+8$
- $y^2=40 x^6+57 x^5+32 x^4+23 x^3+12 x^2+11 x+9$
- $y^2=6 x^6+59 x^5+53 x^4+49 x^3+10 x^2+61 x+62$
- $y^2=61 x^6+27 x^5+x^4+20 x^3+60 x^2+59 x+59$
- $y^2=11 x^6+41 x^5+22 x^4+57 x^3+23 x^2+38 x+38$
- and 148 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67}$.
Endomorphism algebra over $\F_{67}$| The isogeny class factors as 1.67.an $\times$ 1.67.c 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 |
|---|---|---|
| 2.67.ap_ge | $2$ | (not in LMFDB) |
| 2.67.l_ee | $2$ | (not in LMFDB) |
| 2.67.p_ge | $2$ | (not in LMFDB) |