Cremona's table of elliptic curves

1660 = 2² · 5 · 83

Field	Data	Notes
Atkin-Lehner	2- 5+ 83+	Signs for the Atkin-Lehner involutions
Class	1660a	Isogeny class
Conductor	1660	Conductor
∏ cp	6	Product of Tamagawa factors cp
deg	360	Modular degree for the optimal curve
Δ	-33200 = -1 · 24 · 52 · 83	Discriminant
Eigenvalues	2-  1 5+ -1  3  2  3  2	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-1381,19300]	[a1,a2,a3,a4,a6]
j	-18217937403904/2075	j-invariant
L	1.9024267520115	L(r)(E,1)/r!
Ω	2.8536401280172	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	3	Number of elements in the torsion subgroup
Twists	6640d1 26560i1 14940c1 8300c1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1660a1

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
-	1	+	-1	3	2	3	2	0	-3	5	11	6	-10	6	6	9	5	8	12	14	-4	+	-6	-16

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Quadratic twists for elliptic curve 1660a1

-4	8	-3	5	-7
6640d1	26560i1	14940c1	8300c1	81340p1

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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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