Cremona's table of elliptic curves

39984 = 2⁴ · 3 · 7² · 17

Field	Data	Notes
Atkin-Lehner	2+ 3- 7- 17+	Signs for the Atkin-Lehner involutions
Class	39984r	Isogeny class
Conductor	39984	Conductor
∏ cp	128	Product of Tamagawa factors cp
Δ	2820142531584 = 210 · 34 · 76 · 172	Discriminant
Eigenvalues	2+ 3- -2 7- -4 -6 17+  4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-3544,7076]	[a1,a2,a3,a4,a6]
Generators	[-40:294:1]	Generators of the group modulo torsion
j	40873252/23409	j-invariant
L	4.9314099031559	L(r)(E,1)/r!
Ω	0.68929438242604	Real period
R	0.89428588656782	Regulator
r	1	Rank of the group of rational points
S	1.0000000000007	(Analytic) order of Ш
t	4	Number of elements in the torsion subgroup
Twists	19992v2 119952bj2 816b2	Quadratic twists by: -4 -3 -7

Hecke Eigenvalues for elliptic curve 39984r2

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

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Quadratic twists for elliptic curve 39984r2

-4	-3	-7
19992v2	119952bj2	816b2

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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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