Cremona's table of elliptic curves

1640 = 2³ · 5 · 41

Field	Data	Notes
Atkin-Lehner	2- 5- 41+	Signs for the Atkin-Lehner involutions
Class	1640f	Isogeny class
Conductor	1640	Conductor
∏ cp	24	Product of Tamagawa factors cp
Δ	164000000 = 28 · 56 · 41	Discriminant
Eigenvalues	2- -2 5- -2  0  0  8  0	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-260,1408]	[a1,a2,a3,a4,a6]
Generators	[-14:50:1]	Generators of the group modulo torsion
j	7622072656/640625	j-invariant
L	2.1249661680838	L(r)(E,1)/r!
Ω	1.7720422810412	Real period
R	0.19986037116782	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	3280b2 13120d2 14760g2 8200a2	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1640f2

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	-	-2	0	0	8	0	-4	-6	-8	2	+	12	-2	-12	-12	2	-2	0	10	-16	0	6	-12

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Quadratic twists for elliptic curve 1640f2

-4	8	-3	5	-7	41
3280b2	13120d2	14760g2	8200a2	80360o2	67240i2

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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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