Cremona's table of elliptic curves

Curve 42840n2

42840 = 23 · 32 · 5 · 7 · 17



Data for elliptic curve 42840n2

Field Data Notes
Atkin-Lehner 2+ 3- 5+ 7+ 17+ Signs for the Atkin-Lehner involutions
Class 42840n Isogeny class
Conductor 42840 Conductor
∏ cp 16 Product of Tamagawa factors cp
Δ 2.6459361915244E+20 Discriminant
Eigenvalues 2+ 3- 5+ 7+  6  4 17+  4 Hecke eigenvalues for primes up to 20
Equation [0,0,0,-12256383,16496942002] [a1,a2,a3,a4,a6]
j 1091046322587485234896/1417789883147085 j-invariant
L 2.7848703721759 L(r)(E,1)/r!
Ω 0.17405439825345 Real period
R 1 Regulator
r 0 Rank of the group of rational points
S 4 (Analytic) order of Ш
t 2 Number of elements in the torsion subgroup
Twists 85680bi2 14280ca2 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
Back to Tables and computations