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@article{Caldwell97,
	author={C. Caldwell},
	title={Unique (period) primes and the factorization of cyclotomic polynomial minus
		one},
	abstract={Let $b$ be an integer greater than one. For each prime $p$ not dividing
		$b$, the expansion of $1/p$ (radix $b$) has a period dividing $p-1$. Unique
		primes are those primes (not dividing $b$) for which no other prime has
		the same period. Let $\Phi_{n}(x)$ be the $n$th cyclotomic polynomial.
		We develop criteria for when $\Phi_{n}(x)-1$ is divisible by $\Phi_{m}(x)$,
		and use this to add 18 new primes (and 10 new probable primes) to the list
		of the 29 previously known unique primes (base 10). The divisibility properties
		found are useful in the search for primes of many forms.},
	journal={Mathematica Japonica},
	volume= 46,
	year= 1997,
	pages={189--195},
	number= 1,
	mrnumber={99b:11139}
}