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International Journal of Mathematical Education in Science and Technology Volume 45, 2014 - Issue 2
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Classroom notes

Finding prime divisors of a number without dividing

David SprowsDepartment of Mathematics and Statistics, Villanova University, 800 Lancaster Avenue, Villanova, PA19085-1699, USACorrespondence[email protected]
Pages 291-293 | Received 12 Feb 2013, Accepted 25 Mar 2013, Published online: 09 Aug 2013
 
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Abstract

In this note, we discuss a technique that can be used to determine if certain primes, including 7, are divisors of a number. This technique does not involve division and, in some cases, is more efficient than the standard approach that uses division.

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