Frequency Ordered Ratio Families Arising from the Factorization of $p_{m-1}+1$
Abstract
We investigate a ratio sequence derived from the factorization of , where denotes the th prime. For each , write with the largest prime factor. Restricting to those for which (equivalently, ), we obtain a multiset of values . Since is even and is odd, all values of are strictly even. Sorting the distinct by decreasing frequency yields a new sequence beginning . This article explains how this construction arises naturally from the structure of A223881, why the ``family'' phenomenon appears in plots of , and how the frequency ordering of captures the dominant families. Additionally, we propose a heuristic asymptotic model explaining the observed frequency ordering via classical results on primes in arithmetic progressions and support the model with numerical log-log analysis.
Keywords
Cite
@article{arxiv.2605.08256,
title = {Frequency Ordered Ratio Families Arising from the Factorization of $p_{m-1}+1$},
author = {Alexander R Povolotsky},
journal= {arXiv preprint arXiv:2605.08256},
year = {2026}
}