Cremona's table of elliptic curves

21204 = 2² · 3² · 19 · 31

Class	r	Atkin-Lehner	Eigenvalues
21204a (1 curve)	1	2- 3- 19+ 31+	2- 3-  1 -3  1  2 -3 19+
Curve Equation t Generators 21204a1 [0,0,0,-783912,-1985627932] 1 [3343220:546426522:125]
21204b (1 curve)	0	2- 3- 19+ 31-	2- 3-  1  5 -3 -6 -7 19+
Curve Equation t 21204b1 [0,0,0,-9912,612308] 1
21204c (2 curves)	0	2- 3- 19+ 31-	2- 3- -2  4 -4  4  6 19+
Curve Equation t 21204c1 [0,0,0,-336,-2171] 2 21204c2 [0,0,0,-1191,13390] 2
21204d (2 curves)	0	2- 3- 19+ 31-	2- 3- -2 -4  0  0  2 19+
Curve Equation t 21204d1 [0,0,0,-43176,1534709] 2 21204d2 [0,0,0,-351831,-79271170] 2
21204e (2 curves)	0	2- 3- 19- 31+	2- 3-  2  4  4  2  0 19-
Curve Equation t 21204e1 [0,0,0,-32844,-2463847] 2 21204e2 [0,0,0,-536439,-151225810] 2
21204f (2 curves)	0	2- 3- 19- 31+	2- 3- -2  0 -2  6 -6 19-
Curve Equation t 21204f1 [0,0,0,-7350456,-7945481999] 2 21204f2 [0,0,0,-118774911,-498235368890] 2

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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