Cremona's table of elliptic curves

2666 = 2 · 31 · 43

Field	Data	Notes
Atkin-Lehner	2+ 31- 43+	Signs for the Atkin-Lehner involutions
Class	2666a	Isogeny class
Conductor	2666	Conductor
∏ cp	1	Product of Tamagawa factors cp
deg	208	Modular degree for the optimal curve
Δ	2666 = 2 · 31 · 43	Discriminant
Eigenvalues	2+ -2 -1  0 -5 -5 -6 -4	Hecke eigenvalues for primes up to 20
Equation	[1,0,1,-4,0]	[a1,a2,a3,a4,a6]
Generators	[-2:1:1] [0:0:1]	Generators of the group modulo torsion
j	4826809/2666	j-invariant
L	2.1805636590391	L(r)(E,1)/r!
Ω	3.9503534953077	Real period
R	0.55199203353045	Regulator
r	2	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	21328i1 85312k1 23994w1 66650p1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 2666a1

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
+	-2	-1	0	-5	-5	-6	-4	-6	10	-	-10	-5	+	3	-1	-6	14	0	-16	-11	8	-12	-13	3

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Quadratic twists for elliptic curve 2666a1

-4	8	-3	5	-31	-43
21328i1	85312k1	23994w1	66650p1	82646b1	114638k1

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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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