Cremona's table of elliptic curves

9920 = 2⁶ · 5 · 31

Class	r	Atkin-Lehner	Eigenvalues
9920a (2 curves)	1	2+ 5+ 31+	2+  0 5+ -2  4  4  0  0
Curve Equation t Generators 9920a1 [0,0,0,-4208,105032] 2 [22:152:1] 9920a2 [0,0,0,-4828,72048] 2 [114:627:8]
9920b (2 curves)	1	2+ 5+ 31+	2+  0 5+ -2 -4  0  0  4
Curve Equation t Generators 9920b1 [0,0,0,-43,-108] 2 [76:660:1] 9920b2 [0,0,0,-68,32] 2 [-8:8:1]
9920c (1 curve)	1	2+ 5+ 31+	2+  1 5+  2  2  2 -5 -1
Curve Equation t Generators 9920c1 [0,1,0,-101,515] 1 [-10:25:1]
9920d (1 curve)	1	2+ 5+ 31+	2+  3 5+ -2 -2 -2 -3  3
Curve Equation t Generators 9920d1 [0,0,0,32,32] 1 [3:161:27]
9920e (1 curve)	1	2+ 5+ 31+	2+ -3 5+  2  2  2 -1 -1
Curve Equation t Generators 9920e1 [0,0,0,-153808,-23217632] 1 [25806655774939:240580856734039:52271672419]
9920f (4 curves)	0	2+ 5+ 31-	2+  0 5+  0  4 -2  6 -4
Curve Equation t 9920f1 [0,0,0,-1448,-13272] 2 9920f2 [0,0,0,-20668,-1143408] 4 9920f3 [0,0,0,-330668,-73187408] 2 9920f4 [0,0,0,-18188,-1428112] 2
9920g (2 curves)	0	2+ 5+ 31-	2+  0 5+  2  4  0  0 -4
Curve Equation t 9920g1 [0,0,0,-43,108] 2 9920g2 [0,0,0,-68,-32] 2
9920h (2 curves)	0	2+ 5+ 31-	2+  1 5+ -2 -2  6 -7  5
Curve Equation t 9920h1 [0,1,0,39,89] 1 9920h2 [0,1,0,-3361,-76271] 1
9920i (1 curve)	0	2+ 5- 31+	2+  1 5-  0  4  6  5  1
Curve Equation t 9920i1 [0,1,0,-5,5] 1
9920j (2 curves)	0	2+ 5- 31+	2+ -2 5-  0 -2  0  2  4
Curve Equation t 9920j1 [0,1,0,-4225,-110625] 2 9920j2 [0,1,0,-68225,-6881825] 2
9920k (2 curves)	2	2+ 5- 31+	2+ -2 5- -4 -4 -4  4 -4
Curve Equation t Generators 9920k1 [0,1,0,-125,-125] 2 [-10:15:1]&[-5:20:1] 9920k2 [0,1,0,495,-497] 2 [3:32:1]&[11:80:1]
9920l (2 curves)	1	2+ 5- 31-	2+  0 5-  0 -2 -2  0  8
Curve Equation t Generators 9920l1 [0,0,0,-1292,19824] 2 [8:100:1] 9920l2 [0,0,0,-21292,1195824] 2 [53:465:1]
9920m (1 curve)	1	2+ 5- 31-	2+  1 5-  0  0  2  3 -1
Curve Equation t Generators 9920m1 [0,1,0,-28805,-1906525] 1 [1190:40625:1]
9920n (2 curves)	1	2+ 5- 31-	2+ -1 5- -4  0 -2 -3  7
Curve Equation t Generators 9920n1 [0,-1,0,-405,3277] 1 [12:1:1] 9920n2 [0,-1,0,235,11725] 1 [20:155:1]
9920o (4 curves)	1	2+ 5- 31-	2+  2 5- -4  0  4  0  4
Curve Equation t Generators 9920o1 [0,-1,0,-6785,221825] 2 [67:252:1] 9920o2 [0,-1,0,-109185,13922945] 2 [47936:402039:343] 9920o3 [0,-1,0,29055,931457] 2 [419:9300:1] 9920o4 [0,-1,0,-130945,8003457] 2 [-216:5115:1]
9920p (2 curves)	1	2+ 5- 31-	2+ -2 5-  0  0 -4  0 -4
Curve Equation t Generators 9920p1 [0,1,0,15,175] 2 [3:16:1] 9920p2 [0,1,0,-385,2655] 2 [-22:31:1]
9920q (2 curves)	1	2+ 5- 31-	2+ -2 5-  4 -4  0 -8 -4
Curve Equation t Generators 9920q1 [0,1,0,-65,-737] 2 [13:28:1] 9920q2 [0,1,0,-1665,-26657] 2 [173:2212:1]
9920r (4 curves)	0	2- 5+ 31+	2-  0 5+  0 -4 -2  6  4
Curve Equation t 9920r1 [0,0,0,-1448,13272] 2 9920r2 [0,0,0,-20668,1143408] 4 9920r3 [0,0,0,-330668,73187408] 2 9920r4 [0,0,0,-18188,1428112] 2
9920s (2 curves)	0	2- 5+ 31+	2- -1 5+  2  2  6 -7 -5
Curve Equation t 9920s1 [0,-1,0,39,-89] 1 9920s2 [0,-1,0,-3361,76271] 1
9920t (2 curves)	1	2- 5+ 31-	2-  0 5+  2 -4  4  0  0
Curve Equation t Generators 9920t1 [0,0,0,-4208,-105032] 2 [5322:70012:27] 9920t2 [0,0,0,-4828,-72048] 2 [94:552:1]
9920u (1 curve)	1	2- 5+ 31-	2- -1 5+ -2 -2  2 -5  1
Curve Equation t Generators 9920u1 [0,-1,0,-101,-515] 1 [36:203:1]
9920v (1 curve)	1	2- 5+ 31-	2-  3 5+ -2 -2  2 -1  1
Curve Equation t Generators 9920v1 [0,0,0,-153808,23217632] 1 [6123:341:27]
9920w (1 curve)	1	2- 5+ 31-	2- -3 5+  2  2 -2 -3 -3
Curve Equation t Generators 9920w1 [0,0,0,32,-32] 1 [1:1:1]
9920x (2 curves)	1	2- 5- 31+	2-  0 5-  0  2 -2  0 -8
Curve Equation t Generators 9920x1 [0,0,0,-1292,-19824] 2 [92:800:1] 9920x2 [0,0,0,-21292,-1195824] 2 [172:480:1]
9920y (2 curves)	1	2- 5- 31+	2-  0 5- -4  2  6 -4  4
Curve Equation t Generators 9920y1 [0,0,0,28,64] 2 [0:8:1] 9920y2 [0,0,0,-172,624] 2 [20:72:1]
9920z (2 curves)	1	2- 5- 31+	2-  1 5-  4  0 -2 -3 -7
Curve Equation t Generators 9920z1 [0,1,0,-405,-3277] 1 [2426234:2471431:103823] 9920z2 [0,1,0,235,-11725] 1 [110:1165:1]
9920ba (1 curve)	1	2- 5- 31+	2- -1 5-  0  0  2  3  1
Curve Equation t Generators 9920ba1 [0,-1,0,-28805,1906525] 1 [60:625:1]
9920bb (2 curves)	1	2- 5- 31+	2-  2 5-  0  0 -4  0  4
Curve Equation t Generators 9920bb1 [0,-1,0,15,-175] 2 [77:672:1] 9920bb2 [0,-1,0,-385,-2655] 2 [2109:17864:27]
9920bc (2 curves)	1	2- 5- 31+	2-  2 5- -4  4  0 -8  4
Curve Equation t Generators 9920bc1 [0,-1,0,-65,737] 2 [7:24:1] 9920bc2 [0,-1,0,-1665,26657] 2 [-374:93:8]
9920bd (2 curves)	1	2- 5- 31+	2- -2 5-  0  6  4  2 -8
Curve Equation t Generators 9920bd1 [0,1,0,-25,423] 2 [1:20:1] 9920bd2 [0,1,0,-1025,12223] 2 [-14:155:1]
9920be (4 curves)	1	2- 5- 31+	2- -2 5-  4  0  4  0 -4
Curve Equation t Generators 9920be1 [0,1,0,-6785,-221825] 2 [3793:233576:1] 9920be2 [0,1,0,-109185,-13922945] 2 [302010371:18543115192:79507] 9920be3 [0,1,0,29055,-931457] 2 [81:1400:1] 9920be4 [0,1,0,-130945,-8003457] 2 [721:16520:1]
9920bf (2 curves)	0	2- 5- 31-	2-  0 5-  4 -2  6 -4 -4
Curve Equation t 9920bf1 [0,0,0,28,-64] 2 9920bf2 [0,0,0,-172,-624] 2
9920bg (1 curve)	0	2- 5- 31-	2- -1 5-  0 -4  6  5 -1
Curve Equation t 9920bg1 [0,-1,0,-5,-5] 1
9920bh (2 curves)	0	2- 5- 31-	2-  2 5-  0  2  0  2 -4
Curve Equation t 9920bh1 [0,-1,0,-4225,110625] 2 9920bh2 [0,-1,0,-68225,6881825] 2
9920bi (2 curves)	0	2- 5- 31-	2-  2 5-  0 -6  4  2  8
Curve Equation t 9920bi1 [0,-1,0,-25,-423] 2 9920bi2 [0,-1,0,-1025,-12223] 2
9920bj (2 curves)	0	2- 5- 31-	2-  2 5-  4  4 -4  4  4
Curve Equation t 9920bj1 [0,-1,0,-125,125] 2 9920bj2 [0,-1,0,495,497] 2

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