Cremona's table of elliptic curves

20720 = 2⁴ · 5 · 7 · 37

Class	r	Atkin-Lehner	Eigenvalues
20720a (1 curve)	0	2+ 5+ 7- 37+	2+ -1 5+ 7-  4 -6 -2  5
Curve Equation t 20720a1 [0,-1,0,-15216,727531] 1
20720b (1 curve)	0	2+ 5+ 7- 37+	2+  3 5+ 7- -4  6  2  1
Curve Equation t 20720b1 [0,0,0,617,581957] 1
20720c (1 curve)	1	2+ 5+ 7- 37-	2+ -1 5+ 7- -3 -7  7  0
Curve Equation t Generators 20720c1 [0,-1,0,1959,2831221] 1 [540:12691:1]
20720d (1 curve)	0	2+ 5- 7+ 37+	2+  1 5- 7+  5  3 -3  0
Curve Equation t 20720d1 [0,1,0,55,83] 1
20720e (1 curve)	1	2+ 5- 7+ 37-	2+ -1 5- 7+  0  4  8 -5
Curve Equation t Generators 20720e1 [0,-1,0,0,7] 1 [3:5:1]
20720f (1 curve)	1	2+ 5- 7- 37+	2+  2 5- 7- -6 -3  8 -2
Curve Equation t Generators 20720f1 [0,-1,0,-600,-5488] 1 [32:84:1]
20720g (1 curve)	0	2+ 5- 7- 37-	2+  3 5- 7-  4  2  2  3
Curve Equation t 20720g1 [0,0,0,53,89] 1
20720h (1 curve)	0	2- 5+ 7+ 37+	2- -2 5+ 7+ -2  7 -4  6
Curve Equation t 20720h1 [0,1,0,-56,-5036] 1
20720i (2 curves)	1	2- 5+ 7+ 37-	2- -1 5+ 7+  0 -4  0 -5
Curve Equation t Generators 20720i1 [0,-1,0,14,-49] 1 [5:11:1] 20720i2 [0,-1,0,-126,1435] 1 [-11:37:1]
20720j (1 curve)	1	2- 5+ 7- 37+	2- -1 5+ 7-  1  5  3  8
Curve Equation t Generators 20720j1 [0,-1,0,-10221,-396479] 1 [253:3626:1]
20720k (1 curve)	1	2- 5+ 7- 37+	2-  2 5+ 7- -2 -1  0  2
Curve Equation t Generators 20720k1 [0,-1,0,-96,896] 1 [8:24:1]
20720l (2 curves)	1	2- 5+ 7- 37+	2- -2 5+ 7-  4  6  0  0
Curve Equation t Generators 20720l1 [0,1,0,1064,-6636] 2 [134:1600:1] 20720l2 [0,1,0,-4856,-61100] 2 [-41:266:1]
20720m (2 curves)	1	2- 5- 7+ 37+	2-  0 5- 7+ -4 -2  6  2
Curve Equation t Generators 20720m1 [0,0,0,-292,1899] 2 [-7:60:1] 20720m2 [0,0,0,-47,4986] 2 [2:70:1]
20720n (3 curves)	0	2- 5- 7+ 37-	2-  2 5- 7+ -6  5  0 -2
Curve Equation t 20720n1 [0,-1,0,-44840,-3660688] 1 20720n2 [0,-1,0,125160,-19644688] 1 20720n3 [0,-1,0,-1221640,838329072] 1
20720o (1 curve)	0	2- 5- 7- 37+	2- -1 5- 7-  4  2  6  5
Curve Equation t 20720o1 [0,-1,0,-50,-125] 1
20720p (1 curve)	1	2- 5- 7- 37-	2-  1 5- 7-  0  0  4 -7
Curve Equation t Generators 20720p1 [0,1,0,-4870,129475] 1 [15:245:1]
20720q (1 curve)	1	2- 5- 7- 37-	2-  1 5- 7- -5 -1  1 -2
Curve Equation t Generators 20720q1 [0,1,0,303435,138642275] 1 [-170:9065:1]
20720r (1 curve)	1	2- 5- 7- 37-	2- -1 5- 7- -1 -1 -3 -4
Curve Equation t Generators 20720r1 [0,-1,0,-1125,-21875] 1 [100:925:1]
20720s (2 curves)	1	2- 5- 7- 37-	2- -2 5- 7-  4  2  4 -8
Curve Equation t Generators 20720s1 [0,1,0,-1520,25300] 2 [18:64:1] 20720s2 [0,1,0,-25200,1531348] 2 [66:400:1]
20720t (1 curve)	1	2- 5- 7- 37-	2- -2 5- 7- -6 -3  4  2
Curve Equation t Generators 20720t1 [0,1,0,-3878035120,-95659099689900] 1 [615410:480200000:1]

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