Cremona's table of elliptic curves

18720 = 2⁵ · 3² · 5 · 13

Field	Data	Notes
Atkin-Lehner	2+ 3+ 5+ 13+	Signs for the Atkin-Lehner involutions
Class	18720b	Isogeny class
Conductor	18720	Conductor
∏ cp	4	Product of Tamagawa factors cp
Δ	8515653120 = 29 · 39 · 5 · 132	Discriminant
Eigenvalues	2+ 3+ 5+ -4 -4 13+ -2  4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-1323,-17982]	[a1,a2,a3,a4,a6]
Generators	[46:136:1]	Generators of the group modulo torsion
j	25412184/845	j-invariant
L	3.3336597212176	L(r)(E,1)/r!
Ω	0.7932222622264	Real period
R	4.2026804843585	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	18720x2 37440bb2 18720z2 93600cw2	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 18720b2

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

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Quadratic twists for elliptic curve 18720b2

-4	8	-3	5
18720x2	37440bb2	18720z2	93600cw2

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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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