Cremona's table of elliptic curves

21285 = 3² · 5 · 11 · 43

Field	Data	Notes
Atkin-Lehner	3+ 5+ 11- 43-	Signs for the Atkin-Lehner involutions
Class	21285a	Isogeny class
Conductor	21285	Conductor
∏ cp	32	Product of Tamagawa factors cp
Δ	1337679802020375 = 33 · 53 · 118 · 432	Discriminant
Eigenvalues	-1 3+ 5+ -4 11- -6 -6 -2	Hecke eigenvalues for primes up to 20
Equation	[1,-1,1,-41348,-2705544]	[a1,a2,a3,a4,a6]
Generators	[-124:771:1]	Generators of the group modulo torsion
j	289543369296980547/49543696371125	j-invariant
L	1.5764706400477	L(r)(E,1)/r!
Ω	0.33870873599444	Real period
R	0.58179435327348	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	21285b2 106425d2	Quadratic twists by: -3 5

Hecke Eigenvalues for elliptic curve 21285a2

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
-1	+	+	-4	-	-6	-6	-2	2	-6	4	0	0	-	2	-14	8	-2	4	0	16	12	-2	-2	-18

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Quadratic twists for elliptic curve 21285a2

-3	5
21285b2	106425d2

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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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