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	21630bd	Isogeny class
Conductor	21630	Conductor
∏ cp	16	Product of Tamagawa factors cp
Δ	660095214843750 = 2 · 3 · 516 · 7 · 103	Discriminant
Eigenvalues	2- 3- 5- 7+  4  2 -2  0	Hecke eigenvalues for primes up to 20
Equation	[1,0,0,-31210,-1727650]	[a1,a2,a3,a4,a6]
j	3362063314457665441/660095214843750	j-invariant
L	5.8257483781128	L(r)(E,1)/r!
Ω	0.36410927363205	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	4	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	64890j4 108150t4	Quadratic twists by: -3 5

Hecke Eigenvalues for elliptic curve 21630bd4

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
-	-	-	+	4	2	-2	0	0	-2	0	2	6	0	-8	-10	4	10	8	4	-6	8	12	-14	18

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Quadratic twists for elliptic curve 21630bd4

-3	5
64890j4	108150t4

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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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