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Journal Article

Primes at a Glance

R. K. Guy, C. B. Lacampagne and J. L. Selfridge
Mathematics of Computation
Vol. 48, No. 177 (Jan., 1987), pp. 183-202
DOI: 10.2307/2007883
Stable URL: http://www.jstor.org/stable/2007883
Page Count: 20

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Topics: Prime numbers, Mathematical theorems
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Primes at a Glance
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Abstract

Let $N = B - L, B \geqslant |L|, \gcd(B, L) = 1, p \mid BL$ for all primes $p \leqslant \sqrt N$. Then $N$ is 0, 1 or a prime. Writing $N$ in this form suggests a primality and a squarefreeness test. If we also require that when the prime $q \mid BL$ and $p < q$ then $p \mid BL$, we say that $B - L$ is a presentation of $N$. We list all presentations found for any $N$. We believe our list is complete.

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