Cremona's table of elliptic curves

28638 = 2 · 3² · 37 · 43

Class	r	Atkin-Lehner	Eigenvalues
28638a (1 curve)	1	2+ 3+ 37- 43-	2+ 3+  0 -5  3 -5 -1 -7
Curve Equation t Generators 28638a1 [1,-1,0,-72942,-7671340] 1 [377:4090:1]
28638b (2 curves)	1	2+ 3+ 37- 43-	2+ 3+ -2  0 -6  2 -8 -8
Curve Equation t Generators 28638b1 [1,-1,0,-3423,76365] 2 [27:42:1] 28638b2 [1,-1,0,417,235341] 2 [-50:321:1]
28638c (1 curve)	1	2+ 3+ 37- 43-	2+ 3+  3  1  3 -5  2 -7
Curve Equation t Generators 28638c1 [1,-1,0,417,-127] 1 [61:469:1]
28638d (1 curve)	0	2+ 3- 37+ 43+	2+ 3-  4 -1 -5  5  3  3
Curve Equation t 28638d1 [1,-1,0,-158895,24422413] 1
28638e (1 curve)	1	2+ 3- 37- 43+	2+ 3-  2  1 -1  3 -3 -1
Curve Equation t Generators 28638e1 [1,-1,0,435564,-45855536] 1 [4385:291347:1]
28638f (1 curve)	1	2+ 3- 37- 43+	2+ 3- -2  1  3 -1  5 -5
Curve Equation t Generators 28638f1 [1,-1,0,-333,7141] 1 [35:176:1]
28638g (1 curve)	0	2+ 3- 37- 43-	2+ 3-  1  3  3 -7  4  1
Curve Equation t 28638g1 [1,-1,0,-11439,-468099] 1
28638h (1 curve)	0	2+ 3- 37- 43-	2+ 3-  4 -3 -3 -1 -5 -5
Curve Equation t 28638h1 [1,-1,0,76230,-57698892] 1
28638i (1 curve)	2	2- 3+ 37- 43-	2- 3+  0 -5 -3 -5  1 -7
Curve Equation t Generators 28638i1 [1,-1,1,-8105,286825] 1 [-25:700:1]&[-65:764:1]
28638j (2 curves)	0	2- 3+ 37- 43-	2- 3+  2  0  6  2  8 -8
Curve Equation t 28638j1 [1,-1,1,-30809,-2031047] 2 28638j2 [1,-1,1,3751,-6357959] 2
28638k (1 curve)	2	2- 3+ 37- 43-	2- 3+ -3  1 -3 -5 -2 -7
Curve Equation t Generators 28638k1 [1,-1,1,46,-11] 1 [1:5:1]&[17:65:1]
28638l (1 curve)	1	2- 3- 37+ 43+	2- 3-  0  5 -3  5 -7 -7
Curve Equation t Generators 28638l1 [1,-1,1,400,-1357] 1 [51:361:1]
28638m (1 curve)	1	2- 3- 37+ 43+	2- 3- -1 -1 -1  5  0 -3
Curve Equation t Generators 28638m1 [1,-1,1,-42188,-4661805] 1 [869:24351:1]
28638n (1 curve)	2	2- 3- 37+ 43-	2- 3- -2 -3 -1 -5  1 -5
Curve Equation t Generators 28638n1 [1,-1,1,2299,-42883] 1 [150:569:8]&[19:76:1]
28638o (1 curve)	2	2- 3- 37- 43+	2- 3- -1 -3 -5  1 -8 -1
Curve Equation t Generators 28638o1 [1,-1,1,-9833,675753] 1 [71:540:1]&[-109:720:1]
28638p (1 curve)	0	2- 3- 37- 43+	2- 3-  2 -3  1  1  1 -7
Curve Equation t 28638p1 [1,-1,1,1952536,3839243865] 1
28638q (3 curves)	1	2- 3- 37- 43-	2- 3-  3 -1 -3  5  0 -7
Curve Equation t Generators 28638q1 [1,-1,1,-697923401,-7096579558711] 1 [7989897594195:-1854569205597376:121287375] 28638q2 [1,-1,1,-697623296,-7102987683037] 3 [570787:430476265:1] 28638q3 [1,-1,1,1122250009,-34611518652001] 3 [14184198841639589763:-4145432724965085454354:185749134764193]

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