Cremona's table of elliptic curves

Curve 21294a2

21294 = 2 · 32 · 7 · 132



Data for elliptic curve 21294a2

Field Data Notes
Atkin-Lehner 2+ 3+ 7+ 13+ Signs for the Atkin-Lehner involutions
Class 21294a Isogeny class
Conductor 21294 Conductor
∏ cp 32 Product of Tamagawa factors cp
Δ -165835993412037312 = -1 · 26 · 33 · 76 · 138 Discriminant
Eigenvalues 2+ 3+  0 7+  0 13+  6  4 Hecke eigenvalues for primes up to 20
Equation [1,-1,0,125958,9340020] [a1,a2,a3,a4,a6]
Generators [-68:710:1] Generators of the group modulo torsion
j 1695802078125/1272491584 j-invariant
L 3.8379856100365 L(r)(E,1)/r!
Ω 0.20616314971731 Real period
R 2.3270317799879 Regulator
r 1 Rank of the group of rational points
S 1 (Analytic) order of Ш
t 2 Number of elements in the torsion subgroup
Twists 21294bm4 1638m2 Quadratic twists by: -3 13


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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