Cremona's table of elliptic curves

Curve 42840m3

42840 = 23 · 32 · 5 · 7 · 17



Data for elliptic curve 42840m3

Field Data Notes
Atkin-Lehner 2+ 3- 5+ 7+ 17+ Signs for the Atkin-Lehner involutions
Class 42840m Isogeny class
Conductor 42840 Conductor
∏ cp 64 Product of Tamagawa factors cp
Δ 1.8195857491335E+22 Discriminant
Eigenvalues 2+ 3- 5+ 7+ -4 -2 17+ -4 Hecke eigenvalues for primes up to 20
Equation [0,0,0,-18855003,-30837335002] [a1,a2,a3,a4,a6]
j 993061270514775420004/24375023431250625 j-invariant
L 0.2902369256709 L(r)(E,1)/r!
Ω 0.072559231399699 Real period
R 1 Regulator
r 0 Rank of the group of rational points
S 1 (Analytic) order of Ш
t 4 Number of elements in the torsion subgroup
Twists 85680be3 14280bk3 Quadratic twists by: -4 -3


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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