Cremona's table of elliptic curves

21240 = 2³ · 3² · 5 · 59

Field	Data	Notes
Atkin-Lehner	2- 3- 5+ 59+	Signs for the Atkin-Lehner involutions
Class	21240h	Isogeny class
Conductor	21240	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	6144	Modular degree for the optimal curve
Δ	165162240 = 28 · 37 · 5 · 59	Discriminant
Eigenvalues	2- 3- 5+  2 -3 -1  5  1	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-228,1172]	[a1,a2,a3,a4,a6]
Generators	[4:18:1]	Generators of the group modulo torsion
j	7023616/885	j-invariant
L	5.1016582042454	L(r)(E,1)/r!
Ω	1.7501616263485	Real period
R	0.72874100989307	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	42480h1 7080b1 106200l1	Quadratic twists by: -4 -3 5

Hecke Eigenvalues for elliptic curve 21240h1

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	-3	-1	5	1	6	-8	-4	-5	2	-5	8	11	+	4	-11	-8	-13	-3	6	-1	14

---

Quadratic twists for elliptic curve 21240h1

-4	-3	5
42480h1	7080b1	106200l1

---

Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
Back to Tables and computations