Cremona's table of elliptic curves

1240 = 2³ · 5 · 31

Field	Data	Notes
Atkin-Lehner	2- 5+ 31+	Signs for the Atkin-Lehner involutions
Conductor	1240	Conductor
Count	2	Number of curves in isogeny class
Curves	1240d1 1240d2	Curves in isogeny class
deg	240	Modular degree for the optimal curve
Eigenvalues	2-  2 5+ -4  4  4  4  4	Hecke eigenvalues for primes less than 20
L	2.1747560408699	L(r)(E,1)/r!
r	0	Rank of the group of rational points
Twists	2480d 9920k 11160h 6200c	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for isogeny class 1240d

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	4	4	4	4	2	2	+	8	-6	10	0	0	4	2	8	-16	0	-16	18	6	-10

---

Quadratic twists for isogeny class 1240d

-4	8	-3	5	-7	-31
2480d	9920k	11160h	6200c	60760ba	38440j

---

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