Cremona's table of elliptic curves

Conductor 42021

42021 = 32 · 7 · 23 · 29

Isogeny classes of curves of conductor 42021 [newforms of level 42021]

Class r Atkin-Lehner Eigenvalues
42021a (1 curve) 0 3- 7+ 23+ 29+  0 3-  0 7+  3  0  0 -1
42021b (2 curves) 0 3- 7+ 23+ 29+  1 3-  0 7+ -4 -6  6  2
42021c (1 curve) 0 3- 7+ 23+ 29+  1 3- -3 7+  5 -3  6  2
42021d (1 curve) 0 3- 7+ 23+ 29+ -2 3-  0 7+ -1  6  0 -1
42021e (1 curve) 1 3- 7+ 23+ 29-  0 3-  0 7+ -4  3  1 -3
42021f (2 curves) 1 3- 7+ 23+ 29- -1 3- -2 7+  2  2  0 -2
42021g (1 curve) 1 3- 7+ 23- 29+  0 3-  4 7+  5 -4  0 -1
42021h (1 curve) 1 3- 7- 23+ 29+  1 3-  3 7-  5 -1 -4  0
42021i (1 curve) 0 3- 7- 23+ 29- -1 3-  1 7-  1 -5  8  8
42021j (1 curve) 0 3- 7- 23+ 29-  2 3- -2 7-  4  1  5 -7
42021k (4 curves) 0 3- 7- 23- 29+  1 3-  2 7-  0 -2 -6  0
42021l (2 curves) 0 3- 7- 23- 29+  1 3-  2 7-  2 -2 -2  8
42021m (1 curve) 1 3- 7- 23- 29-  1 3-  3 7- -3 -7  6  0
42021n (1 curve) 1 3- 7- 23- 29- -1 3-  1 7-  1  1  2  2
42021o (1 curve) 1 3- 7- 23- 29- -1 3-  3 7- -3 -1  0 -4

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

Part of Computational Number Theory
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