Cremona's table of elliptic curves

Curve 21560d1

21560 = 23 · 5 · 72 · 11



Data for elliptic curve 21560d1

Field Data Notes
Atkin-Lehner 2+ 5+ 7- 11- Signs for the Atkin-Lehner involutions
Class 21560d Isogeny class
Conductor 21560 Conductor
∏ cp 2 Product of Tamagawa factors cp
deg 5376 Modular degree for the optimal curve
Δ -673750000 = -1 · 24 · 57 · 72 · 11 Discriminant
Eigenvalues 2+  0 5+ 7- 11- -3  6 -2 Hecke eigenvalues for primes up to 20
Equation [0,0,0,-203,-1673] [a1,a2,a3,a4,a6]
Generators [39:223:1] Generators of the group modulo torsion
j -1180037376/859375 j-invariant
L 4.3196311963572 L(r)(E,1)/r!
Ω 0.61286378055588 Real period
R 3.5241364667033 Regulator
r 1 Rank of the group of rational points
S 1 (Analytic) order of Ш
t 1 Number of elements in the torsion subgroup
Twists 43120d1 107800bx1 21560g1 Quadratic twists by: -4 5 -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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