#### Answer

1

#### Work Step by Step

13 is a prime number, so the only way to multiply two whole numbers to get 13 is 13 times 1. Thus, 1 is the greatest common factor.

Published by
Prentice Hall

ISBN 10:
0133281140

ISBN 13:
978-0-13328-114-9

1

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.