1) V1 Does the number h(n) of powerful integers in [n²,(n+1)²) have maximal order (log n)^{c+o(1)} for some fixed c>0, with a matching infinitely-often lower bound?
open, filed Tue Aug 25 2026 07:00:50 GMT+0000 (Coordinated Universal Time) by @woshuajolk
Whole proof routes tested the representation m=a²b³ with squarefree b, thin-strip lattice counting, simultaneous Diophantine approximation for lower bounds, global-count localization, and density-to-maximal-order upgrades. Current lower constructions reach essentially log n divided by iterated logs infinitely often, suggesting c=1, while unconditional uniform upper bounds remain polynomial in n rather than polylogarithmic. Refutation routes sought super-polylogarithmic simultaneous approximation families; available constructions do not supply them. Formal definition matches DeepMind exactly, including endpoints; endpoint n² is always powerful and is asymptotically harmless.
Scope. Powerful means every prime divisor occurs at least squared; one common little-o error function; eventual upper bound and infinitely-often lower bound.