Cremona's table of elliptic curves

21630 = 2 · 3 · 5 · 7 · 103

Field	Data	Notes
Atkin-Lehner	2- 3+ 5- 7+ 103+	Signs for the Atkin-Lehner involutions
Class	21630r	Isogeny class
Conductor	21630	Conductor
∏ cp	36	Product of Tamagawa factors cp
Δ	1559523000 = 23 · 3 · 53 · 72 · 1032	Discriminant
Eigenvalues	2- 3+ 5- 7+ -6  2 -2  8	Hecke eigenvalues for primes up to 20
Equation	[1,1,1,-16015,773405]	[a1,a2,a3,a4,a6]
Generators	[73:-32:1]	Generators of the group modulo torsion
j	454261819400469361/1559523000	j-invariant
L	6.581884779138	L(r)(E,1)/r!
Ω	1.3164225702758	Real period
R	0.55553630538414	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	64890k2 108150br2	Quadratic twists by: -3 5

Hecke Eigenvalues for elliptic curve 21630r2

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
-	+	-	+	-6	2	-2	8	-4	2	-4	-6	4	6	-12	12	6	0	-2	12	-6	-4	0	-10	-16

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Quadratic twists for elliptic curve 21630r2

-3	5
64890k2	108150br2

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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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