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Divisibility tests with weighted digital sums

Palash B. Pal
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Abstract

We propose a divisibility test for all integers which have 1, 3, 7 or 9 in their unit's place. In particular, then, the test applies for all prime divisors except 2 and 5.

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Palash B. Pal. 2005-07-01. Divisibility tests with weighted digital sums. https://arxiv.org/abs/math/0507011

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