Cremona's table of elliptic curves

4042 = 2 · 43 · 47

Class	r	Atkin-Lehner	Eigenvalues
4042a (2 curves)	0	2+ 43- 47+	2+ -2  0 -1  0  2  3 -1
Curve Equation t 4042a1 [1,0,1,-201,1196] 3 4042a2 [1,0,1,1304,-3018] 1
4042b (1 curve)	0	2- 43+ 47+	2- -2  4  5  4 -6 -5  1
Curve Equation t 4042b1 [1,0,0,-1,3] 1
4042c (1 curve)	1	2- 43- 47+	2-  0 -3  2 -4  4  1  5
Curve Equation t Generators 4042c1 [1,-1,1,-79,279] 1 [3:6:1]

Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

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