Small gaps between almost-twin primes
Number Theory
2025-07-17 v2
Abstract
Let be large. We show that there exist infinitely many primes such that and has at most prime factors for each . This improves the previous result of Li and Pan, replacing by and by . The main inputs are the Maynard-Tao sieve, a minorant for the indicator function of the primes constructed by Baker and Irving, for which a stronger equidistribution theorem in arithmetic progressions to smooth moduli is applicable, and Tao's approach previously used to estimate , where stands for the characteristic function of the primes and are multidimensional sieve weights.
Cite
@article{arxiv.2402.00748,
title = {Small gaps between almost-twin primes},
author = {Bin Chen},
journal= {arXiv preprint arXiv:2402.00748},
year = {2025}
}
Comments
21 pages. Revised version, accepted for publication in Forum Mathematicum