Elementary Algebra

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: 43

Answer

$201=3\times67$.

Work Step by Step

Since the sum of digits of 201 is 3, 201 is divisible by 3. When we divide 201 by 3, we get 67. 67 is not divisible by any number except 1 and is therefore a prime number. Since 3 and 67 are prime factors, the prime factorization of 201 is $3\times67$.
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