Cremona's table of elliptic curves

20235 = 3 · 5 · 19 · 71

Field	Data	Notes
Atkin-Lehner	3+ 5- 19- 71+	Signs for the Atkin-Lehner involutions
Class	20235h	Isogeny class
Conductor	20235	Conductor
∏ cp	32	Product of Tamagawa factors cp
deg	86016	Modular degree for the optimal curve
Δ	-2441811776219775 = -1 · 34 · 52 · 198 · 71	Discriminant
Eigenvalues	-1 3+ 5-  0  4 -2 -6 19-	Hecke eigenvalues for primes up to 20
Equation	[1,1,1,-40445,3914282]	[a1,a2,a3,a4,a6]
Generators	[-220:1601:1]	Generators of the group modulo torsion
j	-7316761561829228881/2441811776219775	j-invariant
L	2.8432134760118	L(r)(E,1)/r!
Ω	0.43273264943493	Real period
R	3.2851848360928	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	60705e1 101175l1	Quadratic twists by: -3 5

Hecke Eigenvalues for elliptic curve 20235h1

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
-1	+	-	0	4	-2	-6	-	0	-2	0	6	2	4	8	-10	-4	-2	4	+	10	0	-4	10	2

---

Quadratic twists for elliptic curve 20235h1

-3	5
60705e1	101175l1

---

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