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arXiv · 1110.4671

Verifying Sierpiński and Riesel Numbers in ACL2

John R. Cowles·Ruben Gamboa
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Abstract

A Sierpinski number is an odd positive integer, k, such that no positive integer of the form k * 2^n + 1 is prime. Similar to a Sierpinski number, a Riesel number is an odd positive integer, k, such that no positive integer of the form k * 2^n + 1 is prime. A cover for such a k is a finite list of positive integers such that each integer j of the appropriate form has a factor, d, in the cover, with 1 < d < j. Given a k and its cover, ACL2 is used to systematically verify that each integer of the given form has a non-trivial factor in the cover.

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John R. Cowles, Ruben Gamboa. 2011-10-21. Verifying Sierpiński and Riesel Numbers in ACL2. https://doi.org/10.4204/eptcs.70.2

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