Cremona's table of elliptic curves

1665 = 3² · 5 · 37

Field	Data	Notes
Atkin-Lehner	3+ 5- 37+	Signs for the Atkin-Lehner involutions
Class	1665b	Isogeny class
Conductor	1665	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	144	Modular degree for the optimal curve
Δ	-4995 = -1 · 33 · 5 · 37	Discriminant
Eigenvalues	2 3+ 5-  4  0  1  4 -4	Hecke eigenvalues for primes up to 20
Equation	[0,0,1,3,-3]	[a1,a2,a3,a4,a6]
j	110592/185	j-invariant
L	4.5449537804049	L(r)(E,1)/r!
Ω	2.2724768902025	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	26640x1 106560k1 1665a1 8325h1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1665b1

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	+	-	4	0	1	4	-4	8	1	-6	+	-10	5	7	9	-3	-4	-8	-6	-4	6	9	7	2

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Quadratic twists for elliptic curve 1665b1

-4	8	-3	5	-7	37
26640x1	106560k1	1665a1	8325h1	81585c1	61605a1

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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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