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	7215b	Isogeny class
Conductor	7215	Conductor
∏ cp	16	Product of Tamagawa factors cp
Δ	468506025 = 34 · 52 · 132 · 372	Discriminant
Eigenvalues	1 3+ 5+  0  0 13+ -2  4	Hecke eigenvalues for primes up to 20
Equation	[1,1,0,-223,-848]	[a1,a2,a3,a4,a6]
Generators	[736:19612:1]	Generators of the group modulo torsion
j	1235030650489/468506025	j-invariant
L	3.7014836228298	L(r)(E,1)/r!
Ω	1.2747093924438	Real period
R	2.9037862627916	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	4	Number of elements in the torsion subgroup
Twists	115440cj2 21645l2 36075v2 93795k2	Quadratic twists by: -4 -3 5 13

Hecke Eigenvalues for elliptic curve 7215b2

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

---

Quadratic twists for elliptic curve 7215b2

-4	-3	5	13
115440cj2	21645l2	36075v2	93795k2

---

Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
Back to Tables and computations