Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.
Updated
Claim. Assume the Hardy–Littlewood prime tuples conjecture in the uniform form stated below. Theorem 1 of P. X. Gallagher, On the distribution of primes in short intervals, then gives Poisson statistics for primes in short intervals: for every fixed and every fixed integer , the number of integers for which the interval contains exactly primes is asymptotic to times . Banks's paper on ratios of consecutive prime gaps (card, Section 2.2) records the consequence for the gaps that Gallagher derives from it: under the same hypothesis, for every fixed the proportion of with tends to . Since , for every and all large the inequality implies and is implied by , so the density of the with lies between and for every ; letting , the density of Problem 234 exists for every and equals , a continuous function of , which is both assertions of the problem. The passage from to is this corpus's own one-line deduction, not a statement of either paper. Tao states the same consequence on the site's discussion thread (29 September 2025): on the prime tuples conjecture the normalized gaps have an exponential distribution, so .
Hypothesis. Gallagher's theorem assumes the Hardy–Littlewood asymptotic for prime tuples: for each fixed , the number of for which are all prime is $(\mathfrak S(d_1,\ldots,d_k)+o(1)), N/(\log N)^k$, with the singular series, and the asymptotic is assumed to hold uniformly over distinct shifts in with of order . The proof averages the singular series over such shifts, where its mean is , and reads off the Poisson moments. The hypothesis is unproved, and the claim gives no unconditional answer.
Scope. The claim is conditional and settles no standing of the problem by itself: unconditionally, neither the existence of for any nor its continuity is known. A one-sided unconditional tail bound claimed in a 2026 manuscript is recorded on the problem page.
Acceptance. The result is refereed: P. X. Gallagher, On the distribution
of primes in short intervals, Mathematika 23 (1976), no. 1, 4--9, the paper
link, with a corrigendum in Mathematika 28 (1981), 86. The site labels the
problem OPEN and its commentary does not mention the result, so no curator
acceptance is listed. The page is dated by the issue's publication month,
June 1976, as the publisher's record gives it; the day in the page name is a
placeholder.
Depends on. Nothing on this wiki beyond the cited paper; its hypothesis is stated above.