Discrete Mathematics and Its Applications, Seventh Edition

Published by McGraw-Hill Education
ISBN 10: 0073383090
ISBN 13: 978-0-07338-309-5

Chapter 4 - Section 4.6 - Cryptography - Supplementary Exercises - Page 308: 20

Answer

$24,25,26,27,28$

Work Step by Step

The primes go $2,3,5,7,11,13,17,19,23,29...$. We need a gap of 6 to have 5 consecutive composite. This is first achieved right after 23.
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