Cremona's table of elliptic curves

18928 = 2⁴ · 7 · 13²

Class	r	Atkin-Lehner	Eigenvalues
18928a (1 curve)	1	2+ 7+ 13+	2+  0  1 7+  2 13+  0 -7
Curve Equation t Generators 18928a1 [0,0,0,-11492,518492] 1 [481:10309:1]
18928b (4 curves)	1	2+ 7+ 13+	2+  0 -2 7+ -4 13+ -6  8
Curve Equation t Generators 18928b1 [0,0,0,169,-4394] 2 [651:3160:27] 18928b2 [0,0,0,-3211,-65910] 4 [-35:60:1] 18928b3 [0,0,0,-50531,-4372030] 2 [9165:113230:27] 18928b4 [0,0,0,-9971,303186] 2 [-91:676:1]
18928c (1 curve)	1	2+ 7+ 13+	2+ -2  1 7+ -2 13+ -3  8
Curve Equation t Generators 18928c1 [0,1,0,-9520,468612] 1 [56:338:1]
18928d (1 curve)	0	2+ 7- 13+	2+  1  0 7-  3 13+  4  2
Curve Equation t 18928d1 [0,1,0,-1408,49492] 1
18928e (1 curve)	0	2+ 7- 13+	2+  2  1 7-  4 13+ -6  1
Curve Equation t 18928e1 [0,-1,0,-225,-112867] 1
18928f (1 curve)	2	2+ 7- 13+	2+ -2 -1 7-  2 13+ -3 -8
Curve Equation t Generators 18928f1 [0,1,0,-56,196] 1 [-8:14:1]&[0:14:1]
18928g (1 curve)	0	2+ 7- 13+	2+ -2 -3 7-  0 13+ -2  5
Curve Equation t 18928g1 [0,1,0,180943,-19400549] 1
18928h (2 curves)	0	2+ 7- 13+	2+ -2  4 7-  0 13+ -2 -2
Curve Equation t 18928h1 [0,1,0,-56,8932] 2 18928h2 [0,1,0,-6816,211732] 2
18928i (1 curve)	0	2- 7+ 13+	2-  0  1 7+ -2 13+ -3 -6
Curve Equation t 18928i1 [0,0,0,-2327,-43342] 1
18928j (4 curves)	0	2- 7+ 13+	2-  0 -2 7+  4 13+ -6  0
Curve Equation t 18928j1 [0,0,0,2342509,-936708526] 2 18928j2 [0,0,0,-11501971,-8243825070] 4 18928j3 [0,0,0,-159897491,-777971387310] 2 18928j4 [0,0,0,-84618131,293828278354] 2
18928k (1 curve)	0	2- 7+ 13+	2-  0  3 7+  2 13+ -7 -2
Curve Equation t 18928k1 [0,0,0,169,338] 1
18928l (1 curve)	0	2- 7+ 13+	2-  0  3 7+ -6 13+  4  5
Curve Equation t 18928l1 [0,0,0,2704,-35152] 1
18928m (2 curves)	0	2- 7+ 13+	2- -1  3 7+  0 13+  6  4
Curve Equation t 18928m1 [0,-1,0,8056,172912] 1 18928m2 [0,-1,0,-167704,26888432] 1
18928n (1 curve)	0	2- 7+ 13+	2- -1 -4 7+ -1 13+  4  2
Curve Equation t 18928n1 [0,-1,0,-12461440,-16957149184] 1
18928o (1 curve)	0	2- 7+ 13+	2-  2 -1 7+  2 13+  1 -4
Curve Equation t 18928o1 [0,-1,0,464,-8256] 1
18928p (1 curve)	0	2- 7+ 13+	2-  2 -1 7+ -4 13+ -2 -1
Curve Equation t 18928p1 [0,-1,0,-901,-18903] 1
18928q (2 curves)	0	2- 7+ 13+	2-  2 -3 7+  6 13+ -3  4
Curve Equation t 18928q1 [0,-1,0,-10872,-432784] 1 18928q2 [0,-1,0,2648,-1427856] 1
18928r (1 curve)	0	2- 7+ 13+	2- -3 -3 7+ -4 13+  2  4
Curve Equation t 18928r1 [0,0,0,-8451859,9459003346] 1
18928s (1 curve)	0	2- 7+ 13+	2- -3  4 7+  1 13+  0 -6
Curve Equation t 18928s1 [0,0,0,8957,549250] 1
18928t (2 curves)	1	2- 7+ 13-	2-  1 -2 7+ -5 13-  2  4
Curve Equation t Generators 18928t1 [0,1,0,-264,1652] 1 [4:26:1] 18928t2 [0,1,0,776,-105260] 1 [108:1118:1]
18928u (1 curve)	1	2- 7- 13+	2-  0 -1 7-  2 13+ -3  6
Curve Equation t Generators 18928u1 [0,0,0,-393263,-95222374] 1 [33074:2100539:8]
18928v (1 curve)	1	2- 7- 13+	2-  0  3 7- -2 13+ -4 -1
Curve Equation t Generators 18928v1 [0,0,0,-98696,-11960468] 1 [1378:49686:1]
18928w (1 curve)	1	2- 7- 13+	2-  0 -3 7- -2 13+ -7  2
Curve Equation t Generators 18928w1 [0,0,0,28561,742586] 1 [-46:6083:8]
18928x (3 curves)	1	2- 7- 13+	2- -1  0 7- -3 13+  0  2
Curve Equation t Generators 18928x1 [0,-1,0,18872,1059824] 1 [74:1690:1] 18928x2 [0,-1,0,-521928,146253808] 1 [1114:30758:1] 18928x3 [0,-1,0,-42352808,106103380720] 1 [3818:6422:1]
18928y (2 curves)	1	2- 7- 13+	2- -1 -3 7-  0 13+  6 -4
Curve Equation t Generators 18928y1 [0,-1,0,48,64] 1 [0:8:1] 18928y2 [0,-1,0,-992,12544] 1 [32:-112:1]
18928z (6 curves)	1	2- 7- 13+	2-  2  0 7-  0 13+  6  2
Curve Equation t Generators 18928z1 [0,-1,0,-1408,-40704] 2 [6102720:36550864:91125] 18928z2 [0,-1,0,-28448,-1836160] 2 [-12280:3528:125] 18928z3 [0,-1,0,12112,857024] 2 [2986:163254:1] 18928z4 [0,-1,0,-96048,9423296] 2 [-328:2352:1] 18928z5 [0,-1,0,-461088,121011968] 2 [-77717904:-2871554048:185193] 18928z6 [0,-1,0,-7383328,7724400384] 2 [-1680:124032:1]
18928ba (1 curve)	1	2- 7- 13+	2-  2  1 7- -2 13+  1  4
Curve Equation t Generators 18928ba1 [0,-1,0,78360,-17824912] 1 [4169:269724:1]
18928bb (3 curves)	1	2- 7- 13+	2-  2  3 7-  0 13+ -6 -7
Curve Equation t Generators 18928bb1 [0,-1,0,-19829,-1070083] 1 [260725628748940:3852493788042549:875094437125] 18928bb2 [0,-1,0,34251,-5353219] 1 [316180:15938559:125] 18928bb3 [0,-1,0,-317269,169633437] 1 [204:10647:1]
18928bc (2 curves)	1	2- 7- 13+	2-  2  3 7- -6 13+ -3 -4
Curve Equation t Generators 18928bc1 [0,-1,0,-1837424,-958176064] 1 [82462078020516104590:3733922916287075988189:29215266172399000] 18928bc2 [0,-1,0,447456,-3135209728] 1 [1478690:27521697:1000]
18928bd (1 curve)	1	2- 7- 13+	2- -3  0 7- -5 13+ -4  2
Curve Equation t Generators 18928bd1 [0,0,0,-59995,-123519734] 1 [2717:140608:1]
18928be (1 curve)	1	2- 7- 13+	2- -3  3 7-  4 13+  2 -4
Curve Equation t Generators 18928be1 [0,0,0,-50011,4305418] 1 [3279:4096:27]
18928bf (2 curves)	0	2- 7- 13-	2-  1  2 7-  5 13-  2 -4
Curve Equation t 18928bf1 [0,1,0,-44672,3808052] 1 18928bf2 [0,1,0,131088,-231780652] 1

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