witness #2328

N: 637
|A|: 16
exponent log |A| / log N: 0.4294

status: current record for this modulus
submitted by: David Renshaw
submitted at: 2026-08-12 18:01:13 UTC

Elements (16)

0, 5, 7, 41, 269, 276, 355, 363, 369, 377, 451, 454, 458, 461, 526, 635

Commentary

Improves witness#1933 at the same modulus. Found by randomized remove/regrow search seeded from that record; independently verified by exhaustive enumeration of all 65,536 ordered quadruples (exactly 16 solutions, all diagonal).

last edited by David Renshaw at 2026-08-12 18:01:14 UTC · history