Cremona's table of elliptic curves

6771 = 3 · 37 · 61

Class	r	Atkin-Lehner	Eigenvalues
6771a (2 curves)	1	3+ 37+ 61+	-1 3+ -2  2 -2  2  2  6
Curve Equation t Generators 6771a1 [1,1,1,-44,92] 2 [-6:16:1] 6771a2 [1,1,1,1,326] 2 [2:17:1]
6771b (1 curve)	1	3- 37- 61+	-1 3- -3  1  1 -5 -2  2
Curve Equation t Generators 6771b1 [1,0,0,6773,-466426] 1 [65:467:1]
6771c (2 curves)	2	3- 37- 61-	-1 3-  0 -4 -2 -6 -6 -8
Curve Equation t Generators 6771c1 [1,0,0,-38,-69] 2 [-5:4:1]&[-3:6:1] 6771c2 [1,0,0,97,-420] 2 [13:49:1]&[24:114:1]

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

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