{ "id": "1705.06087", "version": "v1", "published": "2017-05-17T11:01:05.000Z", "updated": "2017-05-17T11:01:05.000Z", "title": "On short products of primes in arithmetic progressions", "authors": [ "Igor E. Shparlinski" ], "categories": [ "math.NT" ], "abstract": "We give several families of reasonably small integers $k, \\ell \\ge 1$ and real positive $\\alpha, \\beta \\le 1$, such that the products $p_1\\ldots p_k s$, where $p_1, \\ldots, p_k \\le m^\\alpha$ are primes and $s \\le m^\\beta$ is a product of at most $\\ell$ primes, represent all reduced residue classes modulo $m$. This is a relaxed version of the still open question of P. Erdos, A. M. Odlyzko and A. Sarkozy (1987), that corresponds to $k = \\ell =1$ (that is, to products of two primes). In particular, we improve recent results of A. Walker (2016).", "revisions": [ { "version": "v1", "updated": "2017-05-17T11:01:05.000Z" } ], "analyses": { "keywords": [ "arithmetic progressions", "short products", "reduced residue classes modulo", "reasonably small integers", "open question" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }