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	18720bl	Isogeny class
Conductor	18720	Conductor
∏ cp	16	Product of Tamagawa factors cp
deg	8192	Modular degree for the optimal curve
Δ	15163200 = 26 · 36 · 52 · 13	Discriminant
Eigenvalues	2- 3- 5-  2 -2 13+  2 -2	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-3897,-93636]	[a1,a2,a3,a4,a6]
j	140283769536/325	j-invariant
L	2.4170019730229	L(r)(E,1)/r!
Ω	0.60425049325573	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	18720t1 37440bq2 2080a1 93600bt1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 18720bl1

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	-2	+	2	-2	4	-2	-6	2	-2	-4	6	-6	14	6	10	-2	-14	-4	14	14	-6

---

Quadratic twists for elliptic curve 18720bl1

-4	8	-3	5
18720t1	37440bq2	2080a1	93600bt1

---

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