Cremona's table of elliptic curves

21780 = 2² · 3² · 5 · 11²

Field	Data	Notes
Atkin-Lehner	2- 3- 5- 11+	Signs for the Atkin-Lehner involutions
Class	21780q	Isogeny class
Conductor	21780	Conductor
∏ cp	16	Product of Tamagawa factors cp
deg	18432	Modular degree for the optimal curve
Δ	-31437687600 = -1 · 24 · 310 · 52 · 113	Discriminant
Eigenvalues	2- 3- 5- -4 11+  4  0  4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,528,-7139]	[a1,a2,a3,a4,a6]
j	1048576/2025	j-invariant
L	2.4478599055957	L(r)(E,1)/r!
Ω	0.61196497639894	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	87120ff1 7260l1 108900bg1 21780p1	Quadratic twists by: -4 -3 5 -11

Hecke Eigenvalues for elliptic curve 21780q1

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	+	4	0	4	8	4	4	-2	-4	12	8	10	0	0	-4	-4	-4	-12	-16	6	-2

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Quadratic twists for elliptic curve 21780q1

-4	-3	5	-11
87120ff1	7260l1	108900bg1	21780p1

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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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