Cremona's table of elliptic curves

27380 = 2² · 5 · 37²

Class	r	Atkin-Lehner	Eigenvalues
27380a (1 curve)	0	2- 5+ 37+	2- -1 5+  1 -3  6  0  0
Curve Equation t 27380a1 [0,-1,0,-62061,523465] 1
27380b (1 curve)	1	2- 5+ 37-	2- -3 5+ -1 -3  4 -2 -2
Curve Equation t Generators 27380b1 [0,0,0,-810448,277375828] 1 [2738:50653:8]
27380c (2 curves)	1	2- 5- 37+	2-  1 5- -1 -3  4  0  4
Curve Equation t Generators 27380c1 [0,1,0,-248245,-18550457] 1 [241878:4305505:343] 27380c2 [0,1,0,-16457205,-25702458025] 1 [6265:342250:1]
27380d (4 curves)	1	2- 5- 37+	2- -2 5-  2  0 -2  6  4
Curve Equation t Generators 27380d1 [0,1,0,-1825,20028] 2 [5644:657944:4913] 27380d2 [0,1,0,5020,140500] 2 [34660:814555:64] 27380d3 [0,1,0,-56585,-5198600] 2 [-137:31:1] 27380d4 [0,1,0,-49740,-6496412] 2 [308:2738:1]
27380e (1 curve)	1	2- 5- 37+	2-  3 5- -3  5 -2 -4  4
Curve Equation t Generators 27380e1 [0,0,0,-300424312,1993943796116] 1 [-25521:40742875:27]
27380f (1 curve)	2	2- 5- 37-	2- -3 5- -1 -3 -4  2  2
Curve Equation t Generators 27380f1 [0,0,0,-592,5476] 1 [444:-370:27]&[-3:85:1]

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