Cremona's table of elliptic curves

19740 = 2² · 3 · 5 · 7 · 47

Field	Data	Notes
Atkin-Lehner	2- 3- 5+ 7- 47+	Signs for the Atkin-Lehner involutions
Class	19740r	Isogeny class
Conductor	19740	Conductor
∏ cp	216	Product of Tamagawa factors cp
Δ	-535694478191873280 = -1 · 28 · 36 · 5 · 76 · 474	Discriminant
Eigenvalues	2- 3- 5+ 7- -6  4  2  2	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-6819156,-6856363260]	[a1,a2,a3,a4,a6]
j	-136985843380845963083344/2092556555437005	j-invariant
L	2.5224946803624	L(r)(E,1)/r!
Ω	0.046712864451155	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	78960bm2 59220bd2 98700i2	Quadratic twists by: -4 -3 5

Hecke Eigenvalues for elliptic curve 19740r2

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
-	-	+	-	-6	4	2	2	8	-2	-2	2	-6	-4	+	-4	-4	-2	4	6	12	-8	12	6	-12

---

Quadratic twists for elliptic curve 19740r2

-4	-3	5
78960bm2	59220bd2	98700i2

---

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