Cremona's table of elliptic curves

Curve 2108a1

2108 = 22 · 17 · 31



Data for elliptic curve 2108a1

Field Data Notes
Atkin-Lehner 2- 17+ 31- Signs for the Atkin-Lehner involutions
Class 2108a Isogeny class
Conductor 2108 Conductor
∏ cp 3 Product of Tamagawa factors cp
deg 252 Modular degree for the optimal curve
Δ -8432 = -1 · 24 · 17 · 31 Discriminant
Eigenvalues 2-  1  0  2 -3 -4 17+ -4 Hecke eigenvalues for primes up to 20
Equation [0,1,0,-218,1169] [a1,a2,a3,a4,a6]
Generators [-7:49:1] Generators of the group modulo torsion
j -71938912000/527 j-invariant
L 3.5082422238701 L(r)(E,1)/r!
Ω 3.702721414118 Real period
R 2.8424300654867 Regulator
r 1 Rank of the group of rational points
S 1 (Analytic) order of Ш
t 3 Number of elements in the torsion subgroup
Twists 8432h1 33728d1 18972f1 52700e1 Quadratic twists by: -4 8 -3 5


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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