Cremona's table of elliptic curves

155 = 5 · 31

Field	Data	Notes
Atkin-Lehner	5+ 31-	Signs for the Atkin-Lehner involutions
Conductor	155	Conductor
Count	2	Number of curves in isogeny class
Curves	155b1 155b2	Curves in isogeny class
deg	8	Modular degree for the optimal curve
Eigenvalues	-1  2 5+  4  4  0 -8  4	Hecke eigenvalues for primes less than 20
L	1.0570696881299	L(r)(E,1)/r!
r	0	Rank of the group of rational points
Twists	2480j 9920q 1395e 775b	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for isogeny class 155b

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	2	+	4	4	0	-8	4	2	-6	-	-4	-6	-6	8	-12	-4	10	8	0	-4	0	2	14	-18

---

Quadratic twists for isogeny class 155b

-4	8	-3	5	-7	-11	13	17	-19	-23	-31
2480j	9920q	1395e	775b	7595h	18755b	26195i	44795g	55955a	81995d	4805c

---

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