Cremona's table of elliptic curves

20280 = 2³ · 3 · 5 · 13²

Field	Data	Notes
Atkin-Lehner	2+ 3+ 5- 13-	Signs for the Atkin-Lehner involutions
Class	20280i	Isogeny class
Conductor	20280	Conductor
∏ cp	16	Product of Tamagawa factors cp
Δ	-1054560000 = -1 · 28 · 3 · 54 · 133	Discriminant
Eigenvalues	2+ 3+ 5- -2  0 13-  6 -2	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,100,-1548]	[a1,a2,a3,a4,a6]
Generators	[22:104:1]	Generators of the group modulo torsion
j	194672/1875	j-invariant
L	4.3704117871184	L(r)(E,1)/r!
Ω	0.76794715768774	Real period
R	1.4227579799493	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	40560bd2 60840bn2 101400dl2 20280q2	Quadratic twists by: -4 -3 5 13

Hecke Eigenvalues for elliptic curve 20280i2

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	0	-	6	-2	0	2	-6	0	6	-4	12	-14	4	-6	-2	-8	-8	-16	4	18	-8

---

Quadratic twists for elliptic curve 20280i2

-4	-3	5	13
40560bd2	60840bn2	101400dl2	20280q2

---

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