Cremona's table of elliptic curves

8405 = 5 · 41²

Field	Data	Notes
Atkin-Lehner	5+ 41+	Signs for the Atkin-Lehner involutions
Class	8405a	Isogeny class
Conductor	8405	Conductor
∏ cp	8	Product of Tamagawa factors cp
Δ	-4990578268200625 = -1 · 54 · 418	Discriminant
Eigenvalues	-1 -2 5+ -2 -6 -2 -2  6	Hecke eigenvalues for primes up to 20
Equation	[1,0,0,-26931,-3803030]	[a1,a2,a3,a4,a6]
Generators	[2518:124816:1]	Generators of the group modulo torsion
j	-454756609/1050625	j-invariant
L	0.88857716468088	L(r)(E,1)/r!
Ω	0.17411699594464	Real period
R	2.5516669405535	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	75645q2 42025b2 205b2	Quadratic twists by: -3 5 41

Hecke Eigenvalues for elliptic curve 8405a2

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	-2	+	-2	-6	-2	-2	6	-4	-10	0	-6	+	-4	2	14	12	-10	2	2	6	2	0	-10	-10

---

Quadratic twists for elliptic curve 8405a2

-3	5	41
75645q2	42025b2	205b2

---

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