Cremona's table of elliptic curves

20280 = 2³ · 3 · 5 · 13²

Field	Data	Notes
Atkin-Lehner	2- 3- 5+ 13+	Signs for the Atkin-Lehner involutions
Class	20280y	Isogeny class
Conductor	20280	Conductor
∏ cp	256	Product of Tamagawa factors cp
deg	258048	Modular degree for the optimal curve
Δ	1080447161785102800 = 24 · 316 · 52 · 137	Discriminant
Eigenvalues	2- 3- 5+ -4  0 13+  2  0	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-387911,-78529086]	[a1,a2,a3,a4,a6]
Generators	[-269:2535:1]	Generators of the group modulo torsion
j	83587439220736/13990184325	j-invariant
L	4.9113630826109	L(r)(E,1)/r!
Ω	0.19347775106925	Real period
R	1.5865400076586	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	4	Number of elements in the torsion subgroup
Twists	40560e1 60840z1 101400k1 1560h1	Quadratic twists by: -4 -3 5 13

Hecke Eigenvalues for elliptic curve 20280y1

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	0	+	2	0	0	-2	4	-6	6	4	4	-10	0	-2	-8	-4	6	-8	-8	6	14

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Quadratic twists for elliptic curve 20280y1

-4	-3	5	13
40560e1	60840z1	101400k1	1560h1

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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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