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curve #6482

y2 + xy = x3 − x2 − 46255751944x + 3500758605922804
a-invariants
[1, -1, 0, -46255751944, 3500758605922804]
c-invariants
[2220276093321, -3024645444274882725]
rank (lower bound)
≥ 13
torsion subgroup
trivial
conductor (N)
42538594273565336395730892886
discriminant (Δ)
1039728321234483952184454483919612
Faltings height
5.0733
naive height
85.2860
primes of bad reduction
2, 11, 101, 81611, 21325424994279436853
regulator
407926153.2356973433102338243231169466264247314377479729786368853
submitted by
Michael Rubinstein
submitted at
last updated

Witness: 13 independent points log in to add more points →

Commentary

Mestre ten-root construction, roots 0,19,47,48,58,66,82,101,105,134: with p(x) = prod (x - a_i), write p = q^2 - r with q a monic quintic and deg r <= 4; the genus-one curve y^2 = r(x) carries the ten points (a_i, q(a_i)), and the curve submitted is the minimal Weierstrass model of its Jacobian. Found by enumerating integer ten-root sets 0 = a_1 < ... < a_10 and scoring each by S = sum of -a_p log(p)/p over the good primes 5 <= p <= 199 (with early abort on low partial sums); the sets with S >= 31, or S >= 30 and one bad prime in that range, or S >= 29 and two or more bad primes, were screened by exact conductor and by a GRH explicit-formula upper bound on the rank, and the survivors were certified with ellrank. Rank 13, proved: 13 independent points listed, matching the 2-descent upper bound. Torsion trivial.

last edited by Michael Rubinstein at · history

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