Cremona's table of elliptic curves

18928 = 2⁴ · 7 · 13²

Field	Data	Notes
Atkin-Lehner	2+ 7- 13+	Signs for the Atkin-Lehner involutions
Class	18928h	Isogeny class
Conductor	18928	Conductor
∏ cp	8	Product of Tamagawa factors cp
deg	18816	Modular degree for the optimal curve
Δ	-34598566912 = -1 · 210 · 7 · 136	Discriminant
Eigenvalues	2+ -2  4 7-  0 13+ -2 -2	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-56,8932]	[a1,a2,a3,a4,a6]
j	-4/7	j-invariant
L	1.8711214673884	L(r)(E,1)/r!
Ω	0.93556073369419	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	9464g1 75712cx1 112a1	Quadratic twists by: -4 8 13

Hecke Eigenvalues for elliptic curve 18928h1

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

---

Quadratic twists for elliptic curve 18928h1

-4	8	13
9464g1	75712cx1	112a1

---

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