Cremona's table of elliptic curves

7215 = 3 · 5 · 13 · 37

Class	r	Atkin-Lehner	Eigenvalues
7215a (1 curve)	1	3+ 5+ 13+ 37+	0 3+ 5+ -2 -5 13+  3  5
Curve Equation t Generators 7215a1 [0,-1,1,-1,-9] 1 [3:2:1]
7215b (4 curves)	1	3+ 5+ 13+ 37+	1 3+ 5+  0  0 13+ -2  4
Curve Equation t Generators 7215b1 [1,1,0,-98,327] 2 [2:11:1] 7215b2 [1,1,0,-223,-848] 4 [736:19612:1] 7215b3 [1,1,0,-3148,-69293] 2 [47156:1253699:64] 7215b4 [1,1,0,702,-5103] 2 [5886:156951:8]
7215c (2 curves)	1	3+ 5- 13+ 37-	-1 3+ 5-  0  2 13+  8  4
Curve Equation t Generators 7215c1 [1,1,1,-1862805,-690949350] 2 [-1032:12078:1] 7215c2 [1,1,1,4971570,-4578341850] 2 [1155:51444:1]
7215d (2 curves)	1	3+ 5- 13+ 37-	-1 3+ 5- -2  0 13+  0  0
Curve Equation t Generators 7215d1 [1,1,1,-235,-1288] 2 [-10:18:1] 7215d2 [1,1,1,-3610,-84988] 2 [-35:18:1]
7215e (4 curves)	0	3+ 5- 13- 37-	-1 3+ 5-  4  0 13- -6  4
Curve Equation t 7215e1 [1,1,1,-1020,10620] 4 7215e2 [1,1,1,-4145,-93130] 4 7215e3 [1,1,1,-64270,-6298030] 2 7215e4 [1,1,1,5980,-465730] 4
7215f (4 curves)	0	3- 5+ 13+ 37+	1 3- 5+  4  0 13+  2 -4
Curve Equation t 7215f1 [1,0,1,-7769,-84049] 2 7215f2 [1,0,1,-98894,-11966749] 4 7215f3 [1,0,1,-1581869,-765911239] 2 7215f4 [1,0,1,-73919,-18150559] 2
7215g (4 curves)	0	3- 5+ 13+ 37+	1 3- 5+ -4  4 13+ -2 -4
Curve Equation t 7215g1 [1,0,1,-924,10597] 2 7215g2 [1,0,1,-1769,-12049] 4 7215g3 [1,0,1,-23414,-1380013] 2 7215g4 [1,0,1,6356,-90049] 2
7215h (2 curves)	1	3- 5- 13+ 37+	1 3- 5-  2 -2 13+ -2 -4
Curve Equation t Generators 7215h1 [1,0,1,-136893,17859931] 2 [485:7857:1] 7215h2 [1,0,1,158352,84467203] 2 [-91:8370:1]
7215i (2 curves)	1	3- 5- 13+ 37+	1 3- 5- -2  2 13+  6 -4
Curve Equation t Generators 7215i1 [1,0,1,-248,-1519] 2 [27:94:1] 7215i2 [1,0,1,-203,-2077] 2 [27:97:1]
7215j (6 curves)	1	3- 5- 13- 37-	-1 3- 5-  0 -4 13- -6 -4
Curve Equation t Generators 7215j1 [1,0,0,-6290,191475] 4 [-35:625:1] 7215j2 [1,0,0,-6695,165312] 8 [-83:430:1] 7215j3 [1,0,0,-34820,-2360313] 4 [954:28383:1] 7215j4 [1,0,0,14950,1018125] 4 [-44:547:1] 7215j5 [1,0,0,-548195,-156270138] 2 [8742:183219:8] 7215j6 [1,0,0,28555,-9977988] 2 [60276:1838547:64]

Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

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