Cremona's table of elliptic curves

9940 = 2² · 5 · 7 · 71

Class	r	Atkin-Lehner	Eigenvalues
9940a (1 curve)	0	2- 5+ 7+ 71+	2- -2 5+ 7+ -5  2  4  1
Curve Equation t 9940a1 [0,1,0,156844,-40869500] 1
9940b (1 curve)	0	2- 5+ 7- 71-	2-  2 5+ 7-  1  2 -4  5
Curve Equation t 9940b1 [0,-1,0,-476,7976] 1
9940c (1 curve)	0	2- 5- 7+ 71-	2- -1 5- 7+  5 -5 -3  8
Curve Equation t 9940c1 [0,-1,0,-85,-415] 1
9940d (1 curve)	0	2- 5- 7- 71+	2-  1 5- 7- -3  3 -2 -8
Curve Equation t 9940d1 [0,1,0,-667780,-210260972] 1
9940e (2 curves)	0	2- 5- 7- 71+	2-  1 5- 7- -3 -7  3  2
Curve Equation t 9940e1 [0,1,0,-152845,22948975] 3 9940e2 [0,1,0,-147645,24588335] 1
9940f (1 curve)	0	2- 5- 7- 71+	2- -2 5- 7-  3 -6  4  1
Curve Equation t 9940f1 [0,1,0,20,-12] 1
9940g (1 curve)	1	2- 5- 7- 71-	2-  1 5- 7- -1  3 -7  2
Curve Equation t Generators 9940g1 [0,1,0,-1668885,832366775] 1 [5905:443750:1]
9940h (2 curves)	1	2- 5- 7- 71-	2- -2 5- 7- -4  0 -4 -4
Curve Equation t Generators 9940h1 [0,1,0,-105,-392] 2 [-7:7:1] 9940h2 [0,1,0,-460,3300] 2 [-20:70:1]

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

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