Cremona's table of elliptic curves

21960 = 2³ · 3² · 5 · 61

Field	Data	Notes
Atkin-Lehner	2+ 3- 5+ 61+	Signs for the Atkin-Lehner involutions
Class	21960c	Isogeny class
Conductor	21960	Conductor
∏ cp	8	Product of Tamagawa factors cp
Δ	-10416418560 = -1 · 28 · 37 · 5 · 612	Discriminant
Eigenvalues	2+ 3- 5+ -2 -6 -2  2 -4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,537,1082]	[a1,a2,a3,a4,a6]
Generators	[7:72:1] [23:160:1]	Generators of the group modulo torsion
j	91765424/55815	j-invariant
L	6.7958956304443	L(r)(E,1)/r!
Ω	0.79019451951563	Real period
R	4.3001409542872	Regulator
r	2	Rank of the group of rational points
S	0.9999999999999	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	43920d2 7320m2 109800bm2	Quadratic twists by: -4 -3 5

Hecke Eigenvalues for elliptic curve 21960c2

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

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Quadratic twists for elliptic curve 21960c2

-4	-3	5
43920d2	7320m2	109800bm2

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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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