Cremona's table of elliptic curves

21660 = 2² · 3 · 5 · 19²

Field	Data	Notes
Atkin-Lehner	2- 3- 5- 19+	Signs for the Atkin-Lehner involutions
Class	21660bb	Isogeny class
Conductor	21660	Conductor
∏ cp	13	Product of Tamagawa factors cp
deg	42120	Modular degree for the optimal curve
Δ	-16621901414640 = -1 · 24 · 313 · 5 · 194	Discriminant
Eigenvalues	2- 3- 5-  4  2 -2  1 19+	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,3490,-178227]	[a1,a2,a3,a4,a6]
j	2253933824/7971615	j-invariant
L	4.5984376476238	L(r)(E,1)/r!
Ω	0.35372597289414	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	86640cl1 64980p1 108300k1 21660q1	Quadratic twists by: -4 -3 5 -19

Hecke Eigenvalues for elliptic curve 21660bb1

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	-2	1	+	4	0	1	8	-2	6	-3	-3	6	2	-16	10	2	0	-5	-6	-6

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Quadratic twists for elliptic curve 21660bb1

-4	-3	5	-19
86640cl1	64980p1	108300k1	21660q1

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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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