#### Answer

$3\times3\times19$

#### Work Step by Step

$3|\underline{171}$ sum of digits is divisible by 3
$3|\underline{\ \ 57}$ sum of digits is divisible by 3
$\ \ \ \ \ 19$

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Published by
Brooks Cole

ISBN 10:
1285199197

ISBN 13:
978-1-28519-919-1

$3\times3\times19$

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