Cremona's table of elliptic curves

Curve 28224ck4

28224 = 26 · 32 · 72



Data for elliptic curve 28224ck4

Field Data Notes
Atkin-Lehner 2+ 3- 7- Signs for the Atkin-Lehner involutions
Class 28224ck Isogeny class
Conductor 28224 Conductor
∏ cp 8 Product of Tamagawa factors cp
Δ 78690759081984 = 217 · 36 · 77 Discriminant
Eigenvalues 2+ 3- -2 7- -4  2 -6  8 Hecke eigenvalues for primes up to 20
Equation [0,0,0,-527436,147435120] [a1,a2,a3,a4,a6]
Generators [421:55:1] Generators of the group modulo torsion
j 1443468546/7 j-invariant
L 4.1681418231227 L(r)(E,1)/r!
Ω 0.53978293833184 Real period
R 3.8609425447978 Regulator
r 1 Rank of the group of rational points
S 1 (Analytic) order of Ш
t 2 Number of elements in the torsion subgroup
Twists 28224gd4 3528k4 3136e3 4032g3 Quadratic twists by: -4 8 -3 -7


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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