Cremona's table of elliptic curves

21156 = 2² · 3 · 41 · 43

Class	r	Atkin-Lehner	Eigenvalues
21156a (1 curve)	0	2- 3+ 41+ 43+	2- 3+  4  3 -2  6  0  5
Curve Equation t 21156a1 [0,-1,0,-5901,252153] 1
21156b (2 curves)	1	2- 3+ 41+ 43-	2- 3+  0  0 -4  2  2 -4
Curve Equation t Generators 21156b1 [0,-1,0,27,66] 2 [68:623:64] 21156b2 [0,-1,0,-188,840] 2 [-7:42:1]
21156c (1 curve)	0	2- 3+ 41- 43-	2- 3+  0  1  2  4  2 -1
Curve Equation t 21156c1 [0,-1,0,-33146053,73761945793] 1
21156d (1 curve)	1	2- 3- 41+ 43+	2- 3- -1 -3  5  1  0  1
Curve Equation t Generators 21156d1 [0,1,0,-1596,24228] 1 [48:246:1]
21156e (1 curve)	1	2- 3- 41- 43-	2- 3-  0 -1  2  0  6 -7
Curve Equation t Generators 21156e1 [0,1,0,-53,-345] 1 [10:15:1]
21156f (1 curve)	1	2- 3- 41- 43-	2- 3- -4  1  2 -4 -2 -1
Curve Equation t Generators 21156f1 [0,1,0,-1445,23799] 1 [34:123:1]

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

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