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	21780v	Isogeny class
Conductor	21780	Conductor
∏ cp	16	Product of Tamagawa factors cp
Δ	3000338385580800 = 28 · 37 · 52 · 118	Discriminant
Eigenvalues	2- 3- 5-  2 11- -2  8  2	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-431607,-109107394]	[a1,a2,a3,a4,a6]
Generators	[59666:5132115:8]	Generators of the group modulo torsion
j	26894628304/9075	j-invariant
L	6.2955625735869	L(r)(E,1)/r!
Ω	0.18626713266456	Real period
R	8.4496423007222	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	87120gb2 7260b2 108900ce2 1980e2	Quadratic twists by: -4 -3 5 -11

Hecke Eigenvalues for elliptic curve 21780v2

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	-	-2	8	2	-8	0	0	2	0	-6	-8	-6	4	-10	-12	-8	-10	14	4	-10	-18

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Quadratic twists for elliptic curve 21780v2

-4	-3	5	-11
87120gb2	7260b2	108900ce2	1980e2

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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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