Cremona's table of elliptic curves

16400 = 2⁴ · 5² · 41

Field	Data	Notes
Atkin-Lehner	2- 5+ 41-	Signs for the Atkin-Lehner involutions
Class	16400r	Isogeny class
Conductor	16400	Conductor
∏ cp	32	Product of Tamagawa factors cp
Δ	-4.5212176E+21	Discriminant
Eigenvalues	2-  0 5+  4  0  2 -2  0	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-8618675,10262139250]	[a1,a2,a3,a4,a6]
Generators	[-3369:32554:1]	Generators of the group modulo torsion
j	-1106280483969259521/70644025000000	j-invariant
L	5.4875193175902	L(r)(E,1)/r!
Ω	0.13559209652764	Real period
R	5.0588487991919	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	2050a4 65600bw3 3280n4	Quadratic twists by: -4 8 5

Hecke Eigenvalues for elliptic curve 16400r4

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

---

Quadratic twists for elliptic curve 16400r4

-4	8	5
2050a4	65600bw3	3280n4

---

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