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curve #6527

y2 + xy = x3 − x2 − 21552137528770x + 38291930368399883296
a-invariants
[1, -1, 0, -21552137528770, 38291930368399883296]
c-invariants
[1034502601380969, -33084223183035792953397]
rank (lower bound)
≥ 15
torsion subgroup
trivial
conductor (N)
756008759365704147346258394890094170
discriminant (Δ)
7265244177504416855997543174893804973700
Faltings height
6.4843
naive height
103.7181
primes of bad reduction
2, 5, 31, 13049, 95873, 313534811, 6217357192685981
regulator
505478798411.21040413718818113797884181143663543324509436352184742917
submitted by
Michael Rubinstein
submitted at
last updated

Witness: 15 independent points log in to add more points →

Commentary

Mestre ten-root construction, roots 0,18,24,47,62,71,80,88,104,156: 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); for the sets with S >= 31, or S >= 30 and one bad prime in that range, or S >= 29 and two or more bad primes, rational points were found by a point search on the quartic y^2 = r(x), and the curves were screened by conductor and by a GRH explicit-formula upper bound on the rank. Rank >= 15: the 15 listed points come from the point search and are independent (height matrix nonsingular at 57 and 115 digits). Torsion trivial.

last edited by Michael Rubinstein at · history

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