Cremona's table of elliptic curves

8240 = 2⁴ · 5 · 103

Class	r	Atkin-Lehner	Eigenvalues
8240a (1 curve)	1	2+ 5+ 103+	2+ -1 5+  2  0  4  2 -3
Curve Equation t Generators 8240a1 [0,-1,0,4,16] 1 [0:4:1]
8240b (1 curve)	0	2+ 5+ 103-	2+  1 5+ -2  4  4  6  7
Curve Equation t 8240b1 [0,1,0,-291,1820] 1
8240c (1 curve)	0	2+ 5- 103+	2+  1 5-  0  6  2 -2 -7
Curve Equation t 8240c1 [0,1,0,-254080,-49379900] 1
8240d (1 curve)	2	2+ 5- 103+	2+ -3 5- -4 -2 -2 -6  1
Curve Equation t Generators 8240d1 [0,0,0,-67,274] 1 [-7:20:1]&[-5:22:1]
8240e (1 curve)	1	2+ 5- 103-	2+  0 5-  2 -3  7 -2 -2
Curve Equation t Generators 8240e1 [0,0,0,13,-46] 1 [5:12:1]
8240f (1 curve)	1	2+ 5- 103-	2+ -3 5- -2 -4  4  2  5
Curve Equation t Generators 8240f1 [0,0,0,2273,16846] 1 [157:2060:1]
8240g (1 curve)	0	2- 5+ 103+	2-  0 5+  2  3 -5  6 -6
Curve Equation t 8240g1 [0,0,0,-1283,52482] 1
8240h (1 curve)	0	2- 5+ 103+	2- -1 5+  0  4  2  8  5
Curve Equation t 8240h1 [0,-1,0,-1,-4] 1
8240i (4 curves)	1	2- 5+ 103-	2-  0 5+  0  0  6  2 -4
Curve Equation t Generators 8240i1 [0,0,0,517,-8918] 2 [111:1190:1] 8240i2 [0,0,0,-4603,-102102] 4 [41657:364650:343] 8240i3 [0,0,0,-70523,-7208278] 2 [-1650461813:124329282:10793861] 8240i4 [0,0,0,-20603,1040298] 4 [-67:1456:1]
8240j (1 curve)	1	2- 5+ 103-	2- -1 5+ -4  2 -6 -6  5
Curve Equation t Generators 8240j1 [0,-1,0,-136,-784] 1 [20:64:1]
8240k (2 curves)	1	2- 5- 103+	2- -1 5-  4  0  2  0 -5
Curve Equation t Generators 8240k1 [0,-1,0,15,-8] 1 [4:10:1] 8240k2 [0,-1,0,-185,1132] 1 [8:10:1]

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

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