Cremona's table of elliptic curves

12816 = 2⁴ · 3² · 89

Field	Data	Notes
Atkin-Lehner	2+ 3- 89+	Signs for the Atkin-Lehner involutions
Class	12816a	Isogeny class
Conductor	12816	Conductor
∏ cp	32	Product of Tamagawa factors cp
Δ	38795158987776 = 210 · 314 · 892	Discriminant
Eigenvalues	2+ 3-  2 -4 -4  2 -2 -4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-21819,1203770]	[a1,a2,a3,a4,a6]
j	1538865821668/51969681	j-invariant
L	1.2868259312726	L(r)(E,1)/r!
Ω	0.64341296563629	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	4	Number of elements in the torsion subgroup
Twists	6408a2 51264bc2 4272a2	Quadratic twists by: -4 8 -3

Hecke Eigenvalues for elliptic curve 12816a2

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	-4	-4	2	-2	-4	4	6	-4	2	-2	-4	0	-6	4	2	-4	8	-6	0	-4	+	18

---

Quadratic twists for elliptic curve 12816a2

-4	8	-3
6408a2	51264bc2	4272a2

---

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