Cremona's table of elliptic curves

31487 = 23 · 37²

Field	Data	Notes
Atkin-Lehner	23- 37-	Signs for the Atkin-Lehner involutions
Class	31487c	Isogeny class
Conductor	31487	Conductor
∏ cp	10	Product of Tamagawa factors cp
Δ	-326020081979 = -1 · 235 · 373	Discriminant
Eigenvalues	-2  1  3 -2 -2  4 -3  1	Hecke eigenvalues for primes up to 20
Equation	[0,1,1,1616,11934]	[a1,a2,a3,a4,a6]
Generators	[456:9786:1]	Generators of the group modulo torsion
j	9208180736/6436343	j-invariant
L	3.6556549237496	L(r)(E,1)/r!
Ω	0.61008411879035	Real period
R	0.59920506224585	Regulator
r	1	Rank of the group of rational points
S	0.99999999999997	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	31487a2	Quadratic twists by: 37

Hecke Eigenvalues for elliptic curve 31487c2

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
-2	1	3	-2	-2	4	-3	1	-	4	0	-	-2	-1	3	-6	6	15	-8	-3	-14	16	-6	9	2

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Quadratic twists for elliptic curve 31487c2

37
31487a2

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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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