Cremona's table of elliptic curves

21801 = 3 · 13² · 43

Class	r	Atkin-Lehner	Eigenvalues
21801a (1 curve)	1	3+ 13+ 43+	0 3+  2  2  5 13+ -3 -2
Curve Equation t Generators 21801a1 [0,-1,1,-3267,73244] 1 [36:31:1]
21801b (2 curves)	1	3+ 13+ 43+	1 3+ -2 -2  2 13+ -6  2
Curve Equation t Generators 21801b1 [1,1,0,-1186,-2465] 2 [-18:125:1] 21801b2 [1,1,0,-12171,509436] 2 [-60:1044:1]
21801c (1 curve)	1	3+ 13+ 43+	1 3+ -2  4  5 13+  3  2
Curve Equation t Generators 21801c1 [1,1,0,-146,-1269] 1 [5054:-97:343]
21801d (1 curve)	1	3+ 13+ 43+	-1 3+  2 -4 -5 13+  3 -2
Curve Equation t Generators 21801d1 [1,1,1,-24762,-2664342] 1 [3544:209030:1]
21801e (1 curve)	1	3+ 13+ 43+	2 3+  0  2 -4 13+  3 -4
Curve Equation t Generators 21801e1 [0,-1,1,-18308,959987] 1 [730:1613:8]
21801f (1 curve)	1	3+ 13+ 43+	-2 3+  0 -2  4 13+  3  4
Curve Equation t Generators 21801f1 [0,-1,1,-108,470] 1 [6:1:1]
21801g (4 curves)	2	3- 13+ 43+	-1 3- -2  0  0 13+ -6 -4
Curve Equation t Generators 21801g1 [1,0,0,-4144,-102961] 2 [-37:26:1]&[79:214:1] 21801g2 [1,0,0,-4989,-58176] 4 [-51:279:1]&[-15:123:1] 21801g3 [1,0,0,17826,-436905] 2 [27:240:1]&[66:981:1] 21801g4 [1,0,0,-41324,3190173] 2 [-203:1897:1]&[-116:2593:1]
21801h (2 curves)	1	3- 13+ 43-	1 3- -2  0  4 13+ -2  4
Curve Equation t Generators 21801h1 [1,0,1,-1187,-86695] 2 [1209:41419:1] 21801h2 [1,0,1,-37522,-2790019] 2 [-107:104:1]
21801i (1 curve)	1	3- 13+ 43-	2 3-  2  0 -1 13+ -2  2
Curve Equation t Generators 21801i1 [0,1,1,-484072,219523243] 1 [7306:185891:8]
21801j (1 curve)	1	3- 13+ 43-	-2 3- -2  0  1 13+ -2 -2
Curve Equation t Generators 21801j1 [0,1,1,-2864,99038] 1 [112:1093:1]

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