Genus 2 curve 22800.c.22800.1

• Label: 22800.c.22800.1
• Conductor: $22800$
• Discriminant: $-22800$
• Mordell-Weil group: \(\Z \oplus \Z/{2}\Z \oplus \Z/{4}\Z\)
• Sato-Tate group: $\mathrm{SU}(2)\times\mathrm{SU}(2)$
• \(\End(J_{\overline{\Q}}) \otimes \R\): \(\R \times \R\)
• \(\End(J_{\overline{\Q}}) \otimes \Q\): \(\Q \times \Q\)
• \(\End(J) \otimes \Q\): \(\Q \times \Q\)
• \(\overline{\Q}\)-simple: no
• \(\mathrm{GL}_2\)-type: yes

Minimal equation

$y^2 + (x^2 + 1)y = -15x^6 - 53x^4 - 62x^2 - 24$

(, )

Invariants

Conductor:	\( N \)	\(=\)	\(22800\)	\(=\)	\( 2^{4} \cdot 3 \cdot 5^{2} \cdot 19 \)
Discriminant:	\( \Delta \)	\(=\)	\(-22800\)	\(=\)	\( - 2^{4} \cdot 3 \cdot 5^{2} \cdot 19 \)

Igusa-Clebsch invariants

\( I_2 \)	\(=\)	\(549624\)	\(=\)	\( 2^{3} \cdot 3 \cdot 22901 \)
\( I_4 \)	\(=\)	\(367224\)	\(=\)	\( 2^{3} \cdot 3 \cdot 11 \cdot 13 \cdot 107 \)
\( I_6 \)	\(=\)	\(67205838156\)	\(=\)	\( 2^{2} \cdot 3 \cdot 127 \cdot 44098319 \)
\( I_{10} \)	\(=\)	\(91200\)	\(=\)	\( 2^{6} \cdot 3 \cdot 5^{2} \cdot 19 \)

Automorphism group

\(\mathrm{Aut}(X)\)	\(\simeq\)	$C_2^2$
\(\mathrm{Aut}(X_{\overline{\Q}})\)	\(\simeq\)	$C_2^2$

Rational points

This curve has no rational points.

Number of rational Weierstrass points: \(0\)

This curve is locally solvable except over $\R$.

Mordell-Weil group of the Jacobian

Group structure: \(\Z \oplus \Z/{2}\Z \oplus \Z/{4}\Z\)

Generator	$D_0$						Height	Order
\(D_0 - D_\infty\)	\(61x^2 + 45z^2\)	\(=\)	\(0,\)	\(183y\)	\(=\)	\(220xz^2 - 24z^3\)	\(8.014590\)	\(\infty\)
\(D_0 - D_\infty\)	\(x^2 + z^2\)	\(=\)	\(0,\)	\(y\)	\(=\)	\(0\)	\(0\)	\(2\)
\(D_0 - D_\infty\)	\(5x^2 + 6z^2\)	\(=\)	\(0,\)	\(5y\)	\(=\)	\(z^3\)	\(0\)	\(4\)

2-torsion field: 8.0.1688960160000.8

BSD invariants

Hasse-Weil conjecture:	verified
Analytic rank:	\(1\)
Mordell-Weil rank:	\(1\)
2-Selmer rank:	\(4\)
Regulator:	\( 8.014590 \)
Real period:	\( 3.986219 \)
Tamagawa product:	\( 1 \)
Torsion order:	\( 8 \)
Leading coefficient:	\( 0.998372 \)
Analytic order of Ш:	\( 2 \)   (rounded)
Order of Ш:	twice a square

Local invariants

Prime	ord(\(N\))	ord(\(\Delta\))	Tamagawa	L-factor	Cluster picture
\(2\)	\(4\)	\(4\)	\(1\)	\(1 + T + 2 T^{2}\)
\(3\)	\(1\)	\(1\)	\(1\)	\(( 1 + T )( 1 + 3 T^{2} )\)
\(5\)	\(2\)	\(2\)	\(1\)	\(( 1 - T )^{2}\)
\(19\)	\(1\)	\(1\)	\(1\)	\(( 1 - T )( 1 - 4 T + 19 T^{2} )\)

Galois representations

For primes $\ell \ge 5$ the Galois representation data has not been computed for this curve since it is not generic.

For primes $\ell \le 3$, the image of the mod-$\ell$ Galois representation is listed in the table below, whenever it is not all of $\GSp(4,\F_\ell)$.

Prime \(\ell\)	mod-\(\ell\) image	Is torsion prime?
\(2\)	2.90.6	yes
\(3\)	3.90.1	no

Sato-Tate group

\(\mathrm{ST}\)	\(\simeq\)	$\mathrm{SU}(2)\times\mathrm{SU}(2)$
\(\mathrm{ST}^0\)	\(\simeq\)	\(\mathrm{SU}(2)\times\mathrm{SU}(2)\)

Decomposition of the Jacobian

Splits over \(\Q\)

Decomposes up to isogeny as the product of the non-isogenous elliptic curve isogeny classes:
  Elliptic curve isogeny class 15.a
  Elliptic curve isogeny class 1520.f

Endomorphisms of the Jacobian

Of \(\GL_2\)-type over \(\Q\)

Endomorphism ring over \(\Q\):

\(\End (J_{})\)	\(\simeq\)	an order of index \(2\) in \(\Z \times \Z\)
\(\End (J_{}) \otimes \Q \)	\(\simeq\)	\(\Q\) \(\times\) \(\Q\)
\(\End (J_{}) \otimes \R\)	\(\simeq\)	\(\R \times \R\)

All \(\overline{\Q}\)-endomorphisms of the Jacobian are defined over \(\Q\).