Cremona's table of elliptic curves

1421 = 7² · 29

Class	r	Atkin-Lehner	Eigenvalues
1421a (2 curves)	1	7+ 29+	0 -2 -3 7+  6 -1  0  2
Curve Equation t Generators 1421a1 [0,1,1,-457,3560] 3 [10:9:1] 1421a2 [0,1,1,-3887,-92823] 1 [-33:24:1]
1421b (1 curve)	0	7+ 29-	2  2  1 7+  4 -5  8  8
Curve Equation t 1421b1 [0,-1,1,-800,8959] 1
1421c (2 curves)	0	7- 29+	0  2  3 7-  6  1  0 -2
Curve Equation t 1421c1 [0,-1,1,-9,-8] 1 1421c2 [0,-1,1,-79,293] 1
1421d (2 curves)	0	7- 29+	1 -2 -2 7- -4  2 -4 -2
Curve Equation t 1421d1 [1,0,1,-467,-4119] 2 1421d2 [1,0,1,-7572,-254215] 2
1421e (2 curves)	0	7- 29+	-2  1  4 7-  2 -4  2 -5
Curve Equation t 1421e1 [0,1,1,964,718] 1 1421e2 [0,1,1,-105366,13130758] 1
1421f (1 curve)	1	7- 29-	-1  1 -1 7- -5  5  4  4
Curve Equation t Generators 1421f1 [1,0,0,-1,622] 1 [-3:26:1]
1421g (1 curve)	1	7- 29-	2 -2 -1 7-  4  5 -8 -8
Curve Equation t Generators 1421g1 [0,1,1,-16,-31] 1 [-22:-3:8]
1421h (1 curve)	1	7- 29-	-2  1  2 7-  0  2 -6 -5
Curve Equation t Generators 1421h1 [0,1,1,-2,4] 1 [2:3:1]
1421i (1 curve)	1	7- 29-	-2 -1 -2 7-  0 -2  6  5
Curve Equation t Generators 1421i1 [0,-1,1,-114,-1674] 1 [33:171:1]

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