Genus 2 isogeny class 2272.a

• Label: 2272.a
• Conductor: $2272$
• Sato-Tate group: $\mathrm{USp}(4)$
• \(\End(J_{\overline{\Q}}) \otimes \R\): \(\R\)
• \(\End(J_{\overline{\Q}}) \otimes \Q\): \(\Q\)
• \(\End(J) \otimes \Q\): \(\Q\)
• \(\overline{\Q}\)-simple: yes
• \(\mathrm{GL}_2\)-type: no

Genus 2 curves in isogeny class 2272.a

Label	Equation
2272.a.36352.2	\(y^2 + (x^3 + x^2)y = 2x^4 + 4x^3 + 7x^2 + 8x + 8\)
2272.a.36352.1	\(y^2 + xy = 4x^5 + 31x^4 + 56x^3 - 16x^2 + x\)

L-function data

Analytic rank:

\(0\)

Mordell-Weil rank:

\(0\)

Bad L-factors:

Prime	L-Factor
\(2\)	\( 1 + T + 2 T^{2}\)
\(71\)	\( ( 1 - T )( 1 + 16 T + 71 T^{2} )\)

Good L-factors:

Prime	L-Factor
\(3\)	\( 1 - T + 2 T^{2} - 3 T^{3} + 9 T^{4}\)
\(5\)	\( ( 1 - 2 T + 5 T^{2} )( 1 + 2 T + 5 T^{2} )\)
\(7\)	\( 1 - T - 2 T^{2} - 7 T^{3} + 49 T^{4}\)
\(11\)	\( ( 1 - 6 T + 11 T^{2} )( 1 + 4 T + 11 T^{2} )\)
\(13\)	\( 1 + T + 8 T^{2} + 13 T^{3} + 169 T^{4}\)
\(17\)	\( ( 1 - 2 T + 17 T^{2} )( 1 + 6 T + 17 T^{2} )\)
\(19\)	\( 1 + 5 T + 26 T^{2} + 95 T^{3} + 361 T^{4}\)
\(23\)	\( 1 - T + 14 T^{2} - 23 T^{3} + 529 T^{4}\)
\(29\)	\( ( 1 - 2 T + 29 T^{2} )( 1 + 10 T + 29 T^{2} )\)
$\cdots$	$\cdots$

See L-function page for more information

Sato-Tate group

\(\mathrm{ST} =\) $\mathrm{USp}(4)$

Decomposition of the Jacobian

Simple over \(\overline{\Q}\)

Endomorphisms of the Jacobian

Not of \(\GL_2\)-type over \(\Q\)

Endomorphism algebra over \(\Q\):

\(\End (J_{}) \otimes \Q \)	\(\simeq\)	\(\Q\)
\(\End (J_{}) \otimes \R\)	\(\simeq\)	\(\R\)

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

More complete information on endomorphism algebras and rings can be found on the pages of the individual curves in the isogeny class.