@article{uoadl:3066075, volume = "58", number = "3", pages = "387-391", journal = "Mathematica Slovaca", issn = "0139-9918, 1337-2211", BIBTEX_ENTRY = "article", year = "2008", author = "Zachariou, A. and Tsangaris, P.G.", abstract = "The aim of the present paper is to characterize prime numbers of the form n = x2 + (x + 1)2 and to obtain certain proper divisors of composite numbers of the same form, i.e. divisors d of n such that 1 < d < n. © Versita 2008.", title = "Primes of the form x2 + (x+1)2. Proper divisors of composites of the same form", doi = "10.2478/S12175-008-0082-3" }