Cremona's table of elliptic curves

21228 = 2² · 3 · 29 · 61

Class	r	Atkin-Lehner	Eigenvalues
21228a (1 curve)	1	2- 3- 29+ 61+	2- 3- -1  3  5 -3  4 -8
Curve Equation t Generators 21228a1 [0,1,0,-20916,1157796] 1 [72:174:1]
21228b (1 curve)	0	2- 3- 29- 61+	2- 3-  3 -1 -3  5  0  4
Curve Equation t 21228b1 [0,1,0,116,-172] 1
21228c (2 curves)	1	2- 3- 29- 61-	2- 3-  0 -1  3  5  3 -4
Curve Equation t Generators 21228c1 [0,1,0,-2018,35505] 3 [1:183:1] 21228c2 [0,1,0,10162,106149] 1 [37245:680943:125]

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

Part of Computational Number Theory
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