Cremona's table of elliptic curves

1645 = 5 · 7 · 47

Field	Data	Notes
Atkin-Lehner	5+ 7+ 47-	Signs for the Atkin-Lehner involutions
Class	1645a	Isogeny class
Conductor	1645	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	88	Modular degree for the optimal curve
Δ	8225 = 52 · 7 · 47	Discriminant
Eigenvalues	1  0 5+ 7+  6  2 -4  4	Hecke eigenvalues for primes up to 20
Equation	[1,-1,0,-5,0]	[a1,a2,a3,a4,a6]
j	15438249/8225	j-invariant
L	1.6809098624556	L(r)(E,1)/r!
Ω	3.3618197249112	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	26320h1 105280n1 14805k1 8225c1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1645a1

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

---

Quadratic twists for elliptic curve 1645a1

-4	8	-3	5	-7	-47
26320h1	105280n1	14805k1	8225c1	11515h1	77315d1

---

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