Cremona's table of elliptic curves

441 = 3² · 7²

Class	r	Atkin-Lehner	Eigenvalues
441b (2 curves)	1	3+ 7+	0 3+  0 7+  0 -7  0 -7
Curve Equation t Generators 441b1 [0,0,1,0,12] 3 [2:4:1] 441b2 [0,0,1,0,-331] 1 [21:94:1]
441a (2 curves)	0	3+ 7-	0 3+  0 7-  0  7  0  7
Curve Equation t 441a1 [0,0,1,0,-4202] 1 441a2 [0,0,1,0,113447] 1
441e (2 curves)	0	3- 7+	-2 3-  2 7+  2  1  0  1
Curve Equation t 441e1 [0,0,1,-1029,-13806] 1 441e2 [0,0,1,-402339,98307144] 1
441c (6 curves)	1	3- 7-	1 3- -2 7- -4  2 -6 -4
Curve Equation t Generators 441c1 [1,-1,0,432,-869] 2 [30:181:1] 441c2 [1,-1,0,-1773,-5720] 4 [-4:38:1] 441c3 [1,-1,0,-21618,-1216265] 4 [18510:879115:8] 441c4 [1,-1,0,-17208,867901] 2 [20:719:1] 441c5 [1,-1,0,-345753,-78165914] 2 [-1099744636:548513633:3241792] 441c6 [1,-1,0,-15003,-1979636] 2 [296:4262:1]
441d (4 curves)	1	3- 7-	-1 3-  0 7- -4  0  0  0
Curve Equation t Generators 441d1 [1,-1,1,-20,46] 2 [2:2:1] 441d2 [1,-1,1,-335,2440] 2 [16:-40:1] 441d3 [1,-1,1,-965,-13940] 2 [46:170:1] 441d4 [1,-1,1,-16400,-804212] 2 [-74:41:1]
441f (2 curves)	1	3- 7-	-2 3- -2 7-  2 -1  0 -1
Curve Equation t Generators 441f1 [0,0,1,-21,40] 1 [4:-5:1] 441f2 [0,0,1,-8211,-286610] 1 [235:3280:1]

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