Did you now that the Hundred Years War actually lasted 116 years? Do you know what decimoctoseptology is? Or what the numbers in a Fibonacci sequence are? Or how to calculate your Erdos-Bacon number? Number fanatic Derrick Niederman has a mission - to bring numbers to life. In Number Freak he explores the unique properties of the most fascinating numbers from 1 to 200, wherever they may crop up: from mathematics to sport, from history to the natural world, from language to pop culture. Packed with illustrations, amusing facts, puzzles, brainteasers and anecdotes, Number Freak is an enthralling and thought-provoking numerical voyage through the history of mathematics, investigating problems of logic, geometry and arithmetic along the way. Entertaining and accessible, it is a must for trivia addicts, maths-lovers and number-philes alike.