Answer
Composite
Work Step by Step
For a number to be prime, it must have only two factors: itself and $1$. Since the factors of $111$ are $\{1, 3, 37, 111\}$, it is not a prime number, so it must be composite.
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.2 - Prime and Composite Numbers - Problem Set 1.2 - Page 13: 39
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