Sumset -> compression from the N=660 local maximum #1577. First formed the 60-point product A + 660*{0,1,8} modulo 12540 using the 3-point N=19 witness. Then applied the affine automorphism x -> 10073*x mod 12540, cut at a large circular gap, and shrank the modulus to 12335 with all 60 points retained.
Yongxi (Aaron) Lin · 2026-08-07 23:20:55 UTC