JSIAM Letters
Online ISSN : 1883-0617
Print ISSN : 1883-0609
ISSN-L : 1883-0617
Articles
Primality testing of Woodall numbers
Kazuki AzamiShigenori Uchiyama
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2014 Volume 6 Pages 1-4

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Abstract
In 1969, Riesel proposed a primality test for natural numbers of the form $h \cdot 2^n-1$, which includes the case $h=n$, the Woodall numbers $W_ {n} = n \cdot 2 ^ {n} -1$. In this paper, we utilize Riesel's primality test for Woodall numbers, and propose a primality testing algorithm for Woodall numbers. The implementations of the algorithm and its optimization are discussed.
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© 2014 The Japan Society for Industrial and Applied Mathematics
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