On the largest prime factors of shifted semiprime numbers

Fuente: arXiv
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Main Author: Tam, Do Duc
Format: Preprint
Published: 2025
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author Tam, Do Duc
author_facet Tam, Do Duc
contents A natural number $n$ is called semi-prime if it is a product of two primes or a square of a prime. We denote $\mathbb{P}_2$ the set of all semi-primes. Our goal is to prove that for fixed integer number $a$ and sufficiently large $x$ the largest prime factor of number $$ \prod_{\substack{n\in \mathbb{P}_2\\n\leq x}}(n+a) $$ exceeds $x^θ$, where $θ= 0.5-\varepsilon,$ $0<\varepsilon\leq 0.01$ is arbitrarily small.
format Preprint
id arxiv_https___arxiv_org_abs_2512_09245
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the largest prime factors of shifted semiprime numbers
Tam, Do Duc
Number Theory
A natural number $n$ is called semi-prime if it is a product of two primes or a square of a prime. We denote $\mathbb{P}_2$ the set of all semi-primes. Our goal is to prove that for fixed integer number $a$ and sufficiently large $x$ the largest prime factor of number $$ \prod_{\substack{n\in \mathbb{P}_2\\n\leq x}}(n+a) $$ exceeds $x^θ$, where $θ= 0.5-\varepsilon,$ $0<\varepsilon\leq 0.01$ is arbitrarily small.
title On the largest prime factors of shifted semiprime numbers
topic Number Theory
url https://arxiv.org/abs/2512.09245