@article{bwmeta1.element.bwnjournal-article-aav30i3p257bwm,
author = {Erd\"os, P. and Shorey, T.},
title = {On the greatest prime factor of $2^p - 1$ for a prime p and other expressions},
journal = {Acta Arithmetica},
volume = {31},
year = {1976},
pages = {257-265},
zbl = {0296.10021},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav30i3p257bwm}
}
Erdös, P.; Shorey, T. On the greatest prime factor of $2^p - 1$ for a prime p and other expressions. Acta Arithmetica, Tome 31 (1976) pp. 257-265. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav30i3p257bwm/