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	20880i	Isogeny class
Conductor	20880	Conductor
∏ cp	32	Product of Tamagawa factors cp
Δ	52131300999840000 = 28 · 318 · 54 · 292	Discriminant
Eigenvalues	2+ 3- 5+  0 -4 -2  6 -4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-1585623,768428822]	[a1,a2,a3,a4,a6]
j	2362414115152710736/279338675625	j-invariant
L	0.6830859674971	L(r)(E,1)/r!
Ω	0.34154298374856	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	10440d2 83520gf2 6960j2 104400m2	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 20880i2

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
+	-	+	0	-4	-2	6	-4	-8	+	-8	-2	-2	4	-8	10	-4	-10	4	8	-6	-8	4	14	2

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Quadratic twists for elliptic curve 20880i2

-4	8	-3	5
10440d2	83520gf2	6960j2	104400m2

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Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
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