This book talks about really big numbers in terms of everyday things, such as the number of basketballs needed to cover New York City. Read this book and satisfy your thirst for truly huge numbers. Travel part of the way to infinity! “ A superb, beautifully illustrated book for kids — and those of us still children at heart — that takes you up (and up, and up, and up, and up, and ...) through the counting numbers, illustrating the power of the different notations mathematicians have invented to talk about VERY BIG NUMBERS. Many of us use words to try to describe the beauty and the power of mathematics. Schwartz does it ” with captivating, full-color drawings. Keith Devlin, NPR Math Guy and author of The Math Instinct and The Math Gene. For notes on the book, including answers to the questions, visit www.ams.org/bookpages/mbk-84 Really Big Numbers Richard Evan Schwartz 2010 Mathematics Subject Classification. Primary 00-XX. For notes on the book, including answers to the questions, visit www.ams.org/bookpages/mbk-84 Schwartz, Richard Evan Really Big Numbers ISBN 978-1-4704-1425-2 Copying and reprinting. Individual readers of this publication, and nonprofit libraries acting for them, are permitted to make fair use of the material, such as to copy a chapter for use in teaching or research. Permission is granted to quote brief passages from this publication in reviews, provided the customary acknowledgment of the source is given. Republication, systematic copying, or multiple reproduction of any material in this publication is permitted only under license from the American Mathematical Society. Requests for such permission should be addressed to the Acquisitions Department, American Mathematical Society, 201 Charles Street, Providence, Rhode Island 02904- 2294 USA. Requests can also be made by email to [email protected]. © 2014 by the author. All rights reserved. Printed in India. ∞ The paper used in this book is acid-free and falls within the guidelines established to ensure permanence and durability. Visit the AMS home page at http://www.ams.org/ 10 9 8 7 6 5 4 3 2 1 19 18 17 16 15 14 To my daughters Lilith and Lucina When I was a kid, 2 I liked to think 1? about shapes ? ? 3 ? ? and numbers. 7 5 0 = { E 7 , , 1 E 7 , 2 { 1 - 1 Z p1 k 2 = 100 Z 1 4 n Z 8 Z 16 I never stopped thinking about them, so I became a mathematician. Now after I tell some kid that I am a mathematician... sometimes the kid asks me to name a REALLY big number. So, I decided to write a book about REALLY big numbers. 6 5 4 3 2 1 We'll start small and climb up 0 to the big ones.