Cremona's table of elliptic curves

656 = 2⁴ · 41

Field	Data	Notes
Atkin-Lehner	2+ 41+	Signs for the Atkin-Lehner involutions
Conductor	656	Conductor
Count	2	Number of curves in isogeny class
Curves	656a1 656a2	Curves in isogeny class
deg	32	Modular degree for the optimal curve
Eigenvalues	2+  0 -2  2  0 -4 -2 -4	Hecke eigenvalues for primes less than 20
L	2.0060295838619	L(r)(E,1)/r!
r	1	Rank of the group of rational points
Twists	328a 2624d 5904h 16400b	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for isogeny class 656a

a2	a3	a5	a7	a11	a13	a17	a19	a23	a29	a31	a37	a41	a43	a47	a53	a59	a61	a67	a71	a73	a79	a83	a89	a97
+	0	-2	2	0	-4	-2	-4	4	0	-4	-6	+	-12	6	-4	4	10	-12	6	-2	2	4	-6	14

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Quadratic twists for isogeny class 656a

-4	8	-3	5	-7	-11	13	41
328a	2624d	5904h	16400b	32144f	79376j	110864d	26896a

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Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
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