Cremona's table of elliptic curves

20880 = 2⁴ · 3² · 5 · 29

Field	Data	Notes
Atkin-Lehner	2- 3- 5+ 29-	Signs for the Atkin-Lehner involutions
Class	20880cb	Isogeny class
Conductor	20880	Conductor
∏ cp	8	Product of Tamagawa factors cp
Δ	-346765252500000000 = -1 · 28 · 314 · 510 · 29	Discriminant
Eigenvalues	2- 3- 5+ -2  4  2  0 -4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-757983,-255577318]	[a1,a2,a3,a4,a6]
j	-258068272529292496/1858095703125	j-invariant
L	1.4555945853797	L(r)(E,1)/r!
Ω	0.080866365854425	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	9	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	5220k2 83520fv2 6960z2 104400en2	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 20880cb2

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	2	0	-4	-6	-	8	-4	-6	-8	-8	2	0	10	-2	8	4	8	6	10	0

---

Quadratic twists for elliptic curve 20880cb2

-4	8	-3	5
5220k2	83520fv2	6960z2	104400en2

---

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