Cremona's table of elliptic curves

40204 = 2² · 19 · 23²

Class	r	Atkin-Lehner	Eigenvalues
40204a (2 curves)	1	2- 19+ 23-	2-  1  3 -2  0 -4  3 19+
Curve Equation t Generators 40204a1 [0,1,0,-84,-316] 1 [-5:2:1] 40204a2 [0,1,0,-1004,11828] 1 [417:422:27]
40204b (1 curve)	1	2- 19+ 23-	2-  2  1  4 -6 -3 -2 19+
Curve Equation t Generators 40204b1 [0,-1,0,150060,74429144] 1 [-17975180135146966:-946653542180477877:131981072951944]
40204c (2 curves)	1	2- 19+ 23-	2- -2  0 -4  4 -6 -4 19+
Curve Equation t Generators 40204c1 [0,1,0,-153,-776] 2 [-7:1:1] 40204c2 [0,1,0,-268,420] 2 [-8:46:1]
40204d (2 curves)	1	2- 19+ 23-	2- -2  3  1 -3  2 -3 19+
Curve Equation t Generators 40204d1 [0,1,0,-83229,-20120417] 1 [3018:12167:8] 40204d2 [0,1,0,720851,437561919] 1 [-1255040730:17551907361:2863288]
40204e (1 curve)	2	2- 19- 23-	2-  0 -1  1  1 -2 -7 19-
Curve Equation t Generators 40204e1 [0,0,0,-16928,17861156] 1 [736:20102:1]&[5980:462346:1]
40204f (1 curve)	0	2- 19- 23-	2-  0 -1  1  1  4  5 19-
Curve Equation t 40204f1 [0,0,0,-2111768,-1181318364] 1
40204g (2 curves)	0	2- 19- 23-	2-  1 -3  2  0 -4 -3 19-
Curve Equation t 40204g1 [0,1,0,-44612,3488324] 3 40204g2 [0,1,0,-531292,-148161164] 1
40204h (1 curve)	0	2- 19- 23-	2- -1  4  2  6 -3  4 19-
Curve Equation t 40204h1 [0,-1,0,-47786,-4010447] 1
40204i (1 curve)	0	2- 19- 23-	2-  2  1  3 -5 -4  3 19-
Curve Equation t 40204i1 [0,-1,0,-11285,467009] 1
40204j (1 curve)	0	2- 19- 23-	2-  2 -1 -4  6 -3  2 19-
Curve Equation t 40204j1 [0,-1,0,284,-6216] 1
40204k (2 curves)	0	2- 19- 23-	2- -2  0  4 -4 -6  4 19-
Curve Equation t 40204k1 [0,1,0,-81113,8793136] 2 40204k2 [0,1,0,-141948,-6245276] 2
40204l (1 curve)	0	2- 19- 23-	2- -2 -3 -1 -1 -4  7 19-
Curve Equation t 40204l1 [0,1,0,-205957,-42029481] 1
40204m (1 curve)	0	2- 19- 23-	2-  3  2  4  4  1  2 19-
Curve Equation t 40204m1 [0,0,0,-1619269,796828997] 1

Data from Elliptic Curve Data by J. E. Cremona.
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