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	18720bf	Isogeny class
Conductor	18720	Conductor
∏ cp	16	Product of Tamagawa factors cp
deg	73728	Modular degree for the optimal curve
Δ	201458654280000 = 26 · 318 · 54 · 13	Discriminant
Eigenvalues	2- 3- 5+ -2  2 13+  2 -2	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-95313,-11305388]	[a1,a2,a3,a4,a6]
Generators	[911:25650:1]	Generators of the group modulo torsion
j	2052450196928704/4317958125	j-invariant
L	4.2811813844207	L(r)(E,1)/r!
Ω	0.27174803556271	Real period
R	3.9385578036981	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	18720h1 37440cs2 6240r1 93600bp1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 18720bf1

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	-8	6	2	2	2	0	6	10	-14	-10	-2	-6	2	12	6	18	-14

---

Quadratic twists for elliptic curve 18720bf1

-4	8	-3	5
18720h1	37440cs2	6240r1	93600bp1

---

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