Numbers Are Forever

by Liz Strachan

This book is only about numbers - that is, whole numbers and nothing but the whole numbers, which start from from 0, 1, 2, 3, 4... and go on forever. Here you can meet perfect numbers, happy numbers, lucky, untouchable, weird, narcissistic, evil and deficient numbers, not to mention nice Friedmans and multi-legged repunits, as well as primes and their cousins, the sexy primes. It is also full of fascinating facts and curios, prime number conjectures, the sieve of Eratosthenes, the Fibonacci series, and much more besides. This is an accessible, clearly explained approach which will appeal to recreational maths enthusiasts, puzzle solvers, and mathematicians of all ages.

Genres: Science

289 pages, Kindle Edition

First published March 20, 2014

Reviews

[Sarah · Rating 3 out of 5]

Enjoyed the earlier part better but but I lost concentration in the middle and it got a bit repetitive in the end. Not good for bedtime reading as it gave me some odd dreams. I was a bit worried by 123 as it did not explain that zeros are even (!) and I'm still not sure what to do about leading zeros......

[Hyojin Kim · Rating 4 out of 5]

There were lots of different number tricks that I didn't know or learn. I read this book since one of the seniors recommended me which I think it was very interesting and helpful. Although I finished this book I'm still going to read it over and over again.

[Megan McLain · Rating 5 out of 5]

Really cool!!! Many new math tricks.

[Rosemary]

DNF at page 142. The first few chapters were a lot of fun, but then it got repetitive.