Cremona's table of elliptic curves

Curve 170a2

170 = 2 · 5 · 17



Data for elliptic curve 170a2

Field Data Notes
Atkin-Lehner 2+ 5- 17- Signs for the Atkin-Lehner involutions
Class 170a Isogeny class
Conductor 170 Conductor
∏ cp 16 Product of Tamagawa factors cp
Δ -722500 = -1 · 22 · 54 · 172 Discriminant
Eigenvalues 2+ -2 5- -2 -2 -6 17- -8 Hecke eigenvalues for primes up to 20
Equation [1,0,1,12,38] [a1,a2,a3,a4,a6]
Generators [-1:5:1] Generators of the group modulo torsion
j 214921799/722500 j-invariant
L 0.8289341482393 L(r)(E,1)/r!
Ω 2.0204645502541 Real period
R 0.10256727198394 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 1360j2 5440c2 1530k2 850g2 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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