Cremona's table of elliptic curves

23856 = 2⁴ · 3 · 7 · 71

Field	Data	Notes
Atkin-Lehner	2- 3+ 7+ 71-	Signs for the Atkin-Lehner involutions
Class	23856r	Isogeny class
Conductor	23856	Conductor
∏ cp	8	Product of Tamagawa factors cp
Δ	2308497408 = 213 · 34 · 72 · 71	Discriminant
Eigenvalues	2- 3+  4 7+  0  2 -4  0	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-12096,-508032]	[a1,a2,a3,a4,a6]
Generators	[15930:7866:125]	Generators of the group modulo torsion
j	47788676405569/563598	j-invariant
L	6.0795121382113	L(r)(E,1)/r!
Ω	0.45523581845277	Real period
R	6.6773218316542	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	2982l2 95424ci2 71568bn2	Quadratic twists by: -4 8 -3

Hecke Eigenvalues for elliptic curve 23856r2

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

---

Quadratic twists for elliptic curve 23856r2

-4	8	-3
2982l2	95424ci2	71568bn2

---

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