Cremona's table of elliptic curves

21780 = 2² · 3² · 5 · 11²

Class	r	Atkin-Lehner	Eigenvalues
21780a (1 curve)	1	2- 3+ 5+ 11-	2- 3+ 5+  0 11-  6 -7  4
Curve Equation t Generators 21780a1 [0,0,0,-33,77] 1 [4:3:1]
21780b (1 curve)	1	2- 3+ 5+ 11-	2- 3+ 5+  0 11- -6  7 -4
Curve Equation t Generators 21780b1 [0,0,0,-3993,-102487] 1 [121:1089:1]
21780c (1 curve)	0	2- 3+ 5- 11-	2- 3+ 5-  0 11-  6  7  4
Curve Equation t 21780c1 [0,0,0,-297,-2079] 1
21780d (1 curve)	0	2- 3+ 5- 11-	2- 3+ 5-  0 11- -6 -7 -4
Curve Equation t 21780d1 [0,0,0,-35937,2767149] 1
21780e (2 curves)	1	2- 3- 5+ 11+	2- 3- 5+  2 11+  6 -2 -4
Curve Equation t Generators 21780e1 [0,0,0,132,-2783] 2 [26:135:1] 21780e2 [0,0,0,-2343,-40898] 2 [-33:22:1]
21780f (2 curves)	1	2- 3- 5+ 11+	2- 3- 5+ -2 11+ -6  2  4
Curve Equation t Generators 21780f1 [0,0,0,15972,3704173] 2 [119:2700:1] 21780f2 [0,0,0,-283503,54435238] 2 [23588:6885:64]
21780g (2 curves)	0	2- 3- 5+ 11-	2- 3- 5+  0 11-  0 -4  4
Curve Equation t 21780g1 [0,0,0,-5808,9317] 2 21780g2 [0,0,0,-65703,6465998] 2
21780h (1 curve)	0	2- 3- 5+ 11-	2- 3- 5+  0 11-  2 -1 -8
Curve Equation t 21780h1 [0,0,0,627,-149303] 1
21780i (1 curve)	0	2- 3- 5+ 11-	2- 3- 5+  0 11- -2  1  8
Curve Equation t 21780i1 [0,0,0,75867,198722293] 1
21780j (1 curve)	0	2- 3- 5+ 11-	2- 3- 5+  2 11-  4 -7  4
Curve Equation t 21780j1 [0,0,0,-297242913,-1987239137587] 1
21780k (1 curve)	0	2- 3- 5+ 11-	2- 3- 5+ -2 11- -4  7 -4
Curve Equation t 21780k1 [0,0,0,-2456553,1493042177] 1
21780l (1 curve)	0	2- 3- 5+ 11-	2- 3- 5+  3 11-  6  2  1
Curve Equation t 21780l1 [0,0,0,-702768,-242864908] 1
21780m (1 curve)	2	2- 3- 5+ 11-	2- 3- 5+ -3 11- -6 -2 -1
Curve Equation t Generators 21780m1 [0,0,0,-5808,182468] 1 [-76:430:1]&[-44:594:1]
21780n (4 curves)	0	2- 3- 5+ 11-	2- 3- 5+  4 11-  4  0  4
Curve Equation t 21780n1 [0,0,0,-49368,4135417] 2 21780n2 [0,0,0,-109263,-7855562] 2 21780n3 [0,0,0,-484968,-128352323] 2 21780n4 [0,0,0,-7732263,-8275761362] 2
21780o (2 curves)	0	2- 3- 5- 11+	2- 3- 5-  4 11+  4  4  8
Curve Equation t 21780o1 [0,0,0,-95832,-13045131] 2 21780o2 [0,0,0,-1593207,-774011106] 2
21780p (2 curves)	0	2- 3- 5- 11+	2- 3- 5-  4 11+ -4  0 -4
Curve Equation t 21780p1 [0,0,0,63888,9502009] 2 21780p2 [0,0,0,-475167,100817926] 2
21780q (2 curves)	0	2- 3- 5- 11+	2- 3- 5- -4 11+  4  0  4
Curve Equation t 21780q1 [0,0,0,528,-7139] 2 21780q2 [0,0,0,-3927,-75746] 2
21780r (2 curves)	2	2- 3- 5- 11+	2- 3- 5- -4 11+ -4 -4 -8
Curve Equation t Generators 21780r1 [0,0,0,-792,9801] 2 [42:-225:1]&[-18:135:1] 21780r2 [0,0,0,-13167,581526] 2 [-110:836:1]&[-33:990:1]
21780s (2 curves)	1	2- 3- 5- 11-	2- 3- 5-  0 11-  4 -2 -2
Curve Equation t Generators 21780s1 [0,0,0,-1452,344729] 2 [-22:605:1] 21780s2 [0,0,0,-83127,9149294] 2 [55:2178:1]
21780t (2 curves)	1	2- 3- 5- 11-	2- 3- 5-  1 11- -2  0 -2
Curve Equation t Generators 21780t1 [0,0,0,33,-506] 1 [15:58:1] 21780t2 [0,0,0,-3927,-94754] 1 [510:11426:1]
21780u (2 curves)	1	2- 3- 5- 11-	2- 3- 5- -1 11-  2  0  2
Curve Equation t Generators 21780u1 [0,0,0,3993,673486] 1 [9904230:236395648:250047] 21780u2 [0,0,0,-475167,126117574] 3 [-57:12370:1]
21780v (2 curves)	1	2- 3- 5- 11-	2- 3- 5-  2 11- -2  8  2
Curve Equation t Generators 21780v1 [0,0,0,-23232,-2194819] 2 [7447:642510:1] 21780v2 [0,0,0,-431607,-109107394] 2 [59666:5132115:8]
21780w (2 curves)	1	2- 3- 5- 11-	2- 3- 5-  2 11- -4  3 -4
Curve Equation t Generators 21780w1 [0,0,0,-115797,-15797639] 1 [752:17955:1] 21780w2 [0,0,0,602943,-37934831] 3 [113:5625:1]
21780x (4 curves)	1	2- 3- 5- 11-	2- 3- 5- -2 11- -2  0 -2
Curve Equation t Generators 21780x1 [0,0,0,238128,-164337239] 2 [462:6655:1] 21780x2 [0,0,0,-3437247,-2258565914] 2 [-913:10890:1] 21780x3 [0,0,0,-17011632,-27027819731] 2 [10263:937750:1] 21780x4 [0,0,0,-272246007,-1728981679106] 2 [156354:5157625:8]
21780y (4 curves)	1	2- 3- 5- 11-	2- 3- 5- -2 11- -2 -6  4
Curve Equation t Generators 21780y1 [0,0,0,-1452,14641] 2 [0:121:1] 21780y2 [0,0,0,3993,98494] 2 [23:450:1] 21780y3 [0,0,0,-45012,-3674891] 2 [275:2178:1] 21780y4 [0,0,0,-39567,-4597274] 2 [4742:326250:1]
21780z (2 curves)	1	2- 3- 5- 11-	2- 3- 5- -2 11-  4 -3  4
Curve Equation t Generators 21780z1 [0,0,0,-957,11869] 1 [-7:135:1] 21780z2 [0,0,0,4983,28501] 1 [92:1125:1]
21780ba (1 curve)	1	2- 3- 5- 11-	2- 3- 5-  3 11- -2 -2  1
Curve Equation t Generators 21780ba1 [0,0,0,-39072,-3219964] 1 [532:11250:1]
21780bb (1 curve)	1	2- 3- 5- 11-	2- 3- 5- -3 11-  2  2 -1
Curve Equation t Generators 21780bb1 [0,0,0,-4727712,4285772084] 1 [1573:27225:1]
21780bc (1 curve)	1	2- 3- 5- 11-	2- 3- 5-  4 11-  2 -5 -8
Curve Equation t Generators 21780bc1 [0,0,0,-6897,-221551] 1 [229:3195:1]
21780bd (4 curves)	1	2- 3- 5- 11-	2- 3- 5-  4 11-  4 -6 -2
Curve Equation t Generators 21780bd1 [0,0,0,-45012,4806241] 2 [110:1089:1] 21780bd2 [0,0,0,-780087,265169806] 2 [-825:18634:1] 21780bd3 [0,0,0,347028,-52549211] 2 [1595:67518:1] 21780bd4 [0,0,0,-1694847,-461332586] 2 [15010:435519:8]
21780be (1 curve)	1	2- 3- 5- 11-	2- 3- 5- -4 11- -2  5  8
Curve Equation t Generators 21780be1 [0,0,0,-834537,294884381] 1 [65420:151677:125]

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