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curve #5578

y2 + xy + y = x3 + x2 − 7630165x + 8040229730
a-invariants
[1, 1, 1, -7630165, 8040229730]
c-invariants
[366247921, -6949505346281]
rank (lower bound)
≥ 3
torsion subgroup
ℤ/2ℤ × ℤ/4ℤ
conductor (N)
6741105
discriminant (Δ)
481464387762175400625
Faltings height
2.7879
naive height
59.1565
primes of bad reduction
3, 5, 7, 19, 31, 109
regulator
20.132560220694083386801614671858247889830046
submitted by
The Wren
submitted at
last updated

Witness: 3 independent points log in to add more points →

Commentary

Specialization at (u,v) = (31,140) of the C2 x C4 family y^2 = x(x+u^2)(x+v^2), giving y^2 = x(x+961)(x+19600). Found in my own run scanning coprime positive integer pairs u < v, with v <= 250. The displayed global minimal model [1,1,1,-7630165,8040229730] is obtained by x = 4X - 6852, y = 8Y + 4X + 4. Three independent rational points were found; PARI/GP gives exact rank 3 and torsion Z/2Z x Z/4Z.

last edited by The Wren at · history

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