Cremona's table of elliptic curves

7215 = 3 · 5 · 13 · 37

Field	Data	Notes
Atkin-Lehner	3- 5+ 13+ 37+	Signs for the Atkin-Lehner involutions
Class	7215g	Isogeny class
Conductor	7215	Conductor
∏ cp	16	Product of Tamagawa factors cp
Δ	-19981601771625 = -1 · 38 · 53 · 13 · 374	Discriminant
Eigenvalues	1 3- 5+ -4  4 13+ -2 -4	Hecke eigenvalues for primes up to 20
Equation	[1,0,1,6356,-90049]	[a1,a2,a3,a4,a6]
j	28403613600082631/19981601771625	j-invariant
L	1.5438754997619	L(r)(E,1)/r!
Ω	0.38596887494047	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	115440bg3 21645n3 36075f3 93795bb3	Quadratic twists by: -4 -3 5 13

Hecke Eigenvalues for elliptic curve 7215g4

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	4	+	-2	-4	0	6	-8	+	-6	4	-4	-10	4	-2	16	-8	6	-4	0	14	14

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Quadratic twists for elliptic curve 7215g4

-4	-3	5	13
115440bg3	21645n3	36075f3	93795bb3

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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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