Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.
Updated
Claim. There is a good sequence of primes, in the sense of Problem 1101, with
so that . This is Theorem 1 of Peter Li,
A Subexponential Good Sequence, a seven-page manuscript dated 27 April 2026
(the preprint link), whose AI disclosure states that it was produced with use
of GPT-5.5 Pro. It was posted to the discussion thread the same day by the user
lipet2k, as a partial result obtained with help from GPT-5.5 Pro (the
discussion link). The construction fixes finitely many small primes and then,
for each large , chooses independently and uniformly among the primes
in ; the prime number theorem with the
de la Vallée Poussin error term makes these intervals disjoint and rich in
primes, and a lemma on excluding certificates, proved by bounding expected
counts and applying the Borel--Cantelli lemma, shows that with probability one
the sequence is good.
Covers. The second question: some good sequence satisfies . The first question, whether some good sequence satisfies , is not touched.
Depends on. No page of this wiki.
Standing. Claimed. A thread reply of 28 April 2026 reports that a check run with ChatGPT found no issues and calls the result a positive answer to the second question; that is neither a review nor acceptance. The site labels the problem OPEN (page last edited 19 October 2025), and its proof-claims tab carries no claim. No arXiv record, refereed version or outside review is known, so the claim lists no evidence.