Cremona's table of elliptic curves

21420 = 2² · 3² · 5 · 7 · 17

Field	Data	Notes
Atkin-Lehner	2- 3- 5+ 7- 17-	Signs for the Atkin-Lehner involutions
Class	21420q	Isogeny class
Conductor	21420	Conductor
∏ cp	216	Product of Tamagawa factors cp
Δ	303385645780560 = 24 · 38 · 5 · 76 · 173	Discriminant
Eigenvalues	2- 3- 5+ 7-  0 -4 17- -4	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-70608,7172737]	[a1,a2,a3,a4,a6]
Generators	[-298:1323:1]	Generators of the group modulo torsion
j	3337628010151936/26010429165	j-invariant
L	4.6506223344574	L(r)(E,1)/r!
Ω	0.54825973630101	Real period
R	1.4137527727989	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	6	Number of elements in the torsion subgroup
Twists	85680dz3 7140o3 107100s3	Quadratic twists by: -4 -3 5

Hecke Eigenvalues for elliptic curve 21420q3

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	-	-4	0	0	-4	2	6	-10	6	12	12	-4	14	-12	2	14	-6	6	2

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Quadratic twists for elliptic curve 21420q3

-4	-3	5
85680dz3	7140o3	107100s3

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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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