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Claim. There is an absolute constant such that infinitely many positive integers satisfy for every integer . This is Theorem 1.3 of Cheuk Fung (Joshua) Lau, On the number of prime factors of consecutive integers, arXiv:2604.15042 (v1 2026-04-16, v2 2026-06-24), stated for , the number of prime factors counted with multiplicity, and hence for ; it is the descending companion of the paper's Theorem 1.1 and is proved by the same argument, a quantitative refinement of Tao and Teräväinen's probabilistic sieve. The source card is Lau 2026.
Covers. The second question of Problem 413: there is an such that infinitely many satisfy for all . It follows from Theorem 1.3 with . For an given by the theorem put ; every is with , so
since for every integer . Hence for all , and infinitely many give infinitely many such . The first question, whether has infinitely many barriers ( for all ), is not covered: the paper's Corollary 1.4 gives infinitely many with for all sufficiently large , which the site's commentary restates as for all , and that weaker form settles no part of the problem.
Depends on. Nothing in this wiki; the argument is self-contained in the preprint.
Acceptance. None. The preprint has no journal record known here, and the site labels the problem OPEN while its commentary credits Lau [La26] with a positive answer to the second question and a weaker version of the first (page last edited 2026-04-17); commentary on a problem the site labels open is not acceptance. No Lean development of the result is known.