Second numbers in arithmetic progressions
Number Theory
2013-07-02 v2
Abstract
We present an arithmetic progression of second numbers of length 28.
Cite
@article{arxiv.1306.6424,
title = {Second numbers in arithmetic progressions},
author = {Andrzej Nowicki},
journal= {arXiv preprint arXiv:1306.6424},
year = {2013}
}
Comments
This paper has been withdrawn by the author because there are longer known progressions of semiprimes (second numbers). For instance, Michael Hartley found out a progression of length 30, and Giovanni Resta one of length 35. >