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	18720k	Isogeny class
Conductor	18720	Conductor
∏ cp	8	Product of Tamagawa factors cp
Δ	121305600 = 29 · 36 · 52 · 13	Discriminant
Eigenvalues	2+ 3- 5+  4 -4 13- -2 -4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-31203,-2121498]	[a1,a2,a3,a4,a6]
Generators	[1634:1295:8]	Generators of the group modulo torsion
j	9001508089608/325	j-invariant
L	5.108455912235	L(r)(E,1)/r!
Ω	0.35921169509848	Real period
R	7.1106480968478	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	18720m3 37440fg4 2080e3 93600dq4	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 18720k2

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

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Quadratic twists for elliptic curve 18720k2

-4	8	-3	5
18720m3	37440fg4	2080e3	93600dq4

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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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