Cremona's table of elliptic curves

Curve 620a1

620 = 22 · 5 · 31



Data for elliptic curve 620a1

Field Data Notes
Atkin-Lehner 2- 5+ 31- Signs for the Atkin-Lehner involutions
Class 620a Isogeny class
Conductor 620 Conductor
∏ cp 3 Product of Tamagawa factors cp
deg 72 Modular degree for the optimal curve
Δ -39680 = -1 · 28 · 5 · 31 Discriminant
Eigenvalues 2-  1 5+ -4  0  2 -3 -7 Hecke eigenvalues for primes up to 20
Equation [0,1,0,-101,359] [a1,a2,a3,a4,a6]
Generators [2:13:1] Generators of the group modulo torsion
j -449511424/155 j-invariant
L 2.1477266018362 L(r)(E,1)/r!
Ω 3.5636105700168 Real period
R 1.808048236168 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 2480h1 9920n1 5580f1 3100d1 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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