Cremona's table of elliptic curves

20402 = 2 · 101²

Class	r	Atkin-Lehner	Eigenvalues
20402a (2 curves)	0	2+ 101-	2+  1  0  2  3 -4 -3 -4
Curve Equation t 20402a1 [1,0,1,-2683076,1692323650] 3 20402a2 [1,0,1,2468429,7095222094] 1
20402b (1 curve)	2	2+ 101-	2+  1 -4 -2 -5  4 -3  4
Curve Equation t Generators 20402b1 [1,0,1,-213,-1848] 1 [18:6:1]&[42:231:1]
20402c (1 curve)	0	2+ 101-	2+ -3  2  4 -5  0 -7  4
Curve Equation t 20402c1 [1,-1,0,64394,-3267986] 1
20402d (1 curve)	0	2- 101+	2-  0  2 -1 -4  0  5  1
Curve Equation t 20402d1 [1,-1,1,38891,-180344595] 1
20402e (2 curves)	2	2- 101+	2- -1  0 -2 -3 -4 -3 -4
Curve Equation t Generators 20402e1 [1,1,1,-263,1533] 1 [3:26:1]&[7:6:1] 20402e2 [1,1,1,242,6987] 1 [-13:49:1]&[17:-137:1]
20402f (1 curve)	0	2- 101+	2- -1 -4  2  5  4 -3  4
Curve Equation t 20402f1 [1,1,1,-2167925,-1886395869] 1
20402g (1 curve)	0	2- 101+	2-  3  2 -4  5  0 -7  4
Curve Equation t 20402g1 [1,-1,1,6,-5] 1

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