Cremona's table of elliptic curves

81328 = 2⁴ · 13 · 17 · 23

Class	r	Atkin-Lehner	Eigenvalues
81328a (1 curve)	1	2+ 13+ 17+ 23+	2+  0 -2  4  0 13+ 17+ -1
Curve Equation t Generators 81328a1 [0,0,0,-116,-484] 1 [8840:26407:512]
81328b (2 curves)	1	2+ 13+ 17+ 23+	2+  2  2  2  0 13+ 17+ -4
Curve Equation t Generators 81328b1 [0,-1,0,-3032,-63232] 2 [256:3984:1] 81328b2 [0,-1,0,-3552,-39520] 2 [55374:859465:216]
81328c (2 curves)	3	2+ 13+ 17+ 23+	2+ -2 -2 -4 -4 13+ 17+ -8
Curve Equation t Generators 81328c1 [0,1,0,96,196] 2 [-1:10:1]&[0:14:1]&[2:20:1] 81328c2 [0,1,0,-424,1236] 2 [-22:20:1]&[-20:46:1]&[-14:68:1]
81328d (2 curves)	0	2+ 13+ 17- 23+	2+  0  0  2  6 13+ 17-  0
Curve Equation t 81328d1 [0,0,0,-869255,311926534] 2 81328d2 [0,0,0,-913195,278646378] 2
81328e (2 curves)	1	2+ 13+ 17- 23-	2+  0 -2  4 -4 13+ 17-  2
Curve Equation t Generators 81328e1 [0,0,0,-20847226,36635695431] 2 [-152380:17265111:64] 81328e2 [0,0,0,-19813031,40433466310] 2 [-30752330932:3575182224453:13144256]
81328f (1 curve)	1	2+ 13+ 17- 23-	2+ -1  1 -4  3 13+ 17- -7
Curve Equation t Generators 81328f1 [0,-1,0,-905,10789] 1 [20:17:1]
81328g (2 curves)	1	2- 13+ 17+ 23-	2- -2 -4  0  6 13+ 17+  0
Curve Equation t Generators 81328g1 [0,1,0,-4800,79924] 2 [74:368:1] 81328g2 [0,1,0,-31840,-2137356] 2 [274:3128:1]
81328h (1 curve)	1	2- 13+ 17- 23+	2-  0  2  0  0 13+ 17-  1
Curve Equation t Generators 81328h1 [0,0,0,-651824,-272494992] 1 [814746938:51555316033:195112]
81328i (2 curves)	1	2- 13+ 17- 23+	2-  0  2  0  0 13+ 17- -2
Curve Equation t Generators 81328i1 [0,0,0,61,770] 2 [2:30:1] 81328i2 [0,0,0,-979,10962] 2 [-9:138:1]
81328j (1 curve)	1	2- 13+ 17- 23+	2-  1 -1  4  3 13+ 17-  5
Curve Equation t Generators 81328j1 [0,1,0,-1381,28243] 1 [-438:5831:27]
81328k (1 curve)	1	2- 13+ 17- 23+	2-  1  2 -5  6 13+ 17-  1
Curve Equation t Generators 81328k1 [0,1,0,-4272,107732] 1 [154:1768:1]
81328l (2 curves)	2	2- 13+ 17- 23-	2-  0  0 -2 -6 13+ 17-  4
Curve Equation t Generators 81328l1 [0,0,0,-3275,70522] 2 [39:46:1]&[63:338:1] 81328l2 [0,0,0,-7435,-144966] 2 [133:-1104:1]&[95:78:1]
81328m (1 curve)	0	2- 13+ 17- 23-	2-  3  3  4 -3 13+ 17-  7
Curve Equation t 81328m1 [0,0,0,2744,-494068] 1
81328n (2 curves)	1	2- 13- 17+ 23+	2-  0  2 -2  0 13- 17+ -4
Curve Equation t Generators 81328n1 [0,0,0,1661,-1662] 2 [14:156:1] 81328n2 [0,0,0,-6659,-13310] 2 [142:1380:1]
81328o (1 curve)	0	2- 13- 17+ 23-	2-  1  2  1 -2 13- 17+  7
Curve Equation t 81328o1 [0,1,0,528,-7468] 1
81328p (1 curve)	0	2- 13- 17+ 23-	2- -1  0 -3  2 13- 17+  7
Curve Equation t 81328p1 [0,-1,0,-284928,-58474496] 1
81328q (1 curve)	0	2- 13- 17+ 23-	2- -1  3  0 -1 13- 17+ -5
Curve Equation t 81328q1 [0,-1,0,1131,4381] 1
81328r (1 curve)	2	2- 13- 17+ 23-	2- -2  0 -2 -4 13- 17+  3
Curve Equation t Generators 81328r1 [0,1,0,-813,-13145] 1 [35:50:1]&[42:169:1]
81328s (1 curve)	1	2- 13- 17- 23-	2-  2  0  2  0 13- 17-  1
Curve Equation t Generators 81328s1 [0,-1,0,-293,4301] 1 [-166:255:8]

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