Cremona's table of elliptic curves

1656 = 2³ · 3² · 23

Field	Data	Notes
Atkin-Lehner	2+ 3- 23+	Signs for the Atkin-Lehner involutions
Class	1656b	Isogeny class
Conductor	1656	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	240	Modular degree for the optimal curve
Δ	-268272 = -1 · 24 · 36 · 23	Discriminant
Eigenvalues	2+ 3-  4  2  4 -5  2  6	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-3,-25]	[a1,a2,a3,a4,a6]
j	-256/23	j-invariant
L	2.7395435266992	L(r)(E,1)/r!
Ω	1.3697717633496	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	3312h1 13248m1 184a1 41400bz1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1656b1

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
+	-	4	2	4	-5	2	6	+	-1	-9	-4	-3	8	5	-6	4	-10	-4	5	-15	-6	-6	8	10

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Quadratic twists for elliptic curve 1656b1

-4	8	-3	5	-7	-23
3312h1	13248m1	184a1	41400bz1	81144t1	38088p1

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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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