Cremona's table of elliptic curves

Curve 42560bl1

42560 = 26 · 5 · 7 · 19



Data for elliptic curve 42560bl1

Field Data Notes
Atkin-Lehner 2+ 5- 7- 19+ Signs for the Atkin-Lehner involutions
Class 42560bl Isogeny class
Conductor 42560 Conductor
∏ cp 12 Product of Tamagawa factors cp
deg 55296 Modular degree for the optimal curve
Δ -136671395840 = -1 · 222 · 5 · 73 · 19 Discriminant
Eigenvalues 2+ -1 5- 7-  0  4  3 19+ Hecke eigenvalues for primes up to 20
Equation [0,-1,0,-21985,1262177] [a1,a2,a3,a4,a6]
Generators [137:896:1] Generators of the group modulo torsion
j -4483146738169/521360 j-invariant
L 5.5338085390482 L(r)(E,1)/r!
Ω 0.99635282785893 Real period
R 0.46283876423441 Regulator
r 1 Rank of the group of rational points
S 0.99999999999928 (Analytic) order of Ш
t 1 Number of elements in the torsion subgroup
Twists 42560da1 1330d1 Quadratic twists by: -4 8


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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