Cremona's table of elliptic curves

4256 = 2⁵ · 7 · 19

Field	Data	Notes
Atkin-Lehner	2+ 7+ 19+	Signs for the Atkin-Lehner involutions
Class	4256a	Isogeny class
Conductor	4256	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	864	Modular degree for the optimal curve
Δ	-143061184 = -1 · 26 · 76 · 19	Discriminant
Eigenvalues	2+  0  2 7+  0 -4  6 19+	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-89,660]	[a1,a2,a3,a4,a6]
Generators	[-3:30:1]	Generators of the group modulo torsion
j	-1218186432/2235331	j-invariant
L	3.8385216203207	L(r)(E,1)/r!
Ω	1.6395547150588	Real period
R	2.341197634373	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	4256b1 8512a2 38304bj1 106400bw1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 4256a1

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

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Quadratic twists for elliptic curve 4256a1

-4	8	-3	5	-7	-19
4256b1	8512a2	38304bj1	106400bw1	29792d1	80864h1

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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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