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Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)


On divisibility by nine of the sums of even amicable pairs

Author: Elvin Lee
Journal: Math. Comp. 23 (1969), 545-548
MSC: Primary 10.07
MathSciNet review: 0248074
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Abstract: Most known even amicable pairs have sums divisible by nine [9]. The general form of the exceptions to the rule of divisibility by nine (Gardner's rule) is deduced and the results expressed in the form of a theorem. A computer search based on a corollary to the theorem is described and six new exceptions to Gardner's rule are found.

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PII: S 0025-5718(1969)0248074-6
Article copyright: © Copyright 1969 American Mathematical Society

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