Cremona's table of elliptic curves

147 = 3 · 7²

Class	r	Atkin-Lehner	Eigenvalues
147a (6 curves)	0	3+ 7-	-1 3+  2 7-  4  2  6 -4
Curve Equation t 147a1 [1,1,1,48,48] 4 147a2 [1,1,1,-197,146] 4 147a3 [1,1,1,-1912,-32782] 2 147a4 [1,1,1,-2402,44246] 4 147a5 [1,1,1,-38417,2882228] 2 147a6 [1,1,1,-1667,72764] 2
147c (2 curves)	0	3+ 7-	2 3+  2 7- -2 -1  0 -1
Curve Equation t 147c1 [0,-1,1,-2,-1] 1 147c2 [0,-1,1,-912,10919] 1
147b (2 curves)	0	3- 7+	2 3- -2 7+ -2  1  0  1
Curve Equation t 147b1 [0,1,1,-114,473] 1 147b2 [0,1,1,-44704,-3655907] 1

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

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