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Type: Article
Cullen numbers with the Lehmer property
Abstract:
Here, we show that there is no positive integer n such that the nth Cullen number C(n) = n2(n) + 1 has the property that it is composite but phi(C(n)) vertical bar C(n) - 1.
Here, we show that there is no positive integer n such that the nth Cullen number C(n) = n2(n) + 1 has the property that it is composite but phi(C(n)) vertical bar C(n) - 1.
MSC: 11A05 (11A07 11N25)
Journal: Proceedings of the American Mathematical Society
ISSN: 0002-9939
Year: 2012
Volume: 140
Number: 1
Pages: 129--134
Created: 2012-12-07 11:49:39
Modified: 2014-02-13 13:48:17
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