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	20280p	Isogeny class
Conductor	20280	Conductor
∏ cp	8	Product of Tamagawa factors cp
deg	161280	Modular degree for the optimal curve
Δ	-243966234096000000 = -1 · 210 · 35 · 56 · 137	Discriminant
Eigenvalues	2- 3+ 5+ -2 -4 13+  0 -2	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,121624,-17309124]	[a1,a2,a3,a4,a6]
j	40254822716/49359375	j-invariant
L	0.33481959725676	L(r)(E,1)/r!
Ω	0.16740979862838	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	40560r1 60840v1 101400bf1 1560b1	Quadratic twists by: -4 -3 5 13

Hecke Eigenvalues for elliptic curve 20280p1

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	+	0	-2	-2	4	-4	2	6	-4	-8	-2	-4	-2	-8	-8	4	8	-12	-6	-4

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Quadratic twists for elliptic curve 20280p1

-4	-3	5	13
40560r1	60840v1	101400bf1	1560b1

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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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