Cremona's table of elliptic curves

855 = 3² · 5 · 19

Field	Data	Notes
Atkin-Lehner	3- 5+ 19+	Signs for the Atkin-Lehner involutions
Class	855a	Isogeny class
Conductor	855	Conductor
∏ cp	4	Product of Tamagawa factors cp
Δ	106879510125 = 38 · 53 · 194	Discriminant
Eigenvalues	-1 3- 5+  4 -4  2 -2 19+	Hecke eigenvalues for primes up to 20
Equation	[1,-1,1,-54068,4852482]	[a1,a2,a3,a4,a6]
j	23977812996389881/146611125	j-invariant
L	0.94240327105651	L(r)(E,1)/r!
Ω	0.94240327105651	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	13680bg3 54720cl4 285c3 4275g4	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 855a4

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
-1	-	+	4	-4	2	-2	+	4	2	0	-6	6	8	12	14	-4	14	-4	0	-14	16	0	6	-10

---

Quadratic twists for elliptic curve 855a4

-4	8	-3	5	-7	-11	-19
13680bg3	54720cl4	285c3	4275g4	41895bx4	103455p4	16245c3

---

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