“Elwes provides a phenomenal scenic tour of googology (the study of huge numbers), covering everything from ancient Mayan and Babylonian numeral systems to the scale of the universe to the dizzyingly fast-growing functions of mathematical logic. I wish I had written this book.” –Scott Aaronson, computer scientist and author of “Who Can Name The Bigger Number?”“Humanity has always been entranced by big numbers–the bigger the better. This fascinating exploration of the giants of the mathematical world is clear, informative, and immensely readable. Wonderful!”–Ian Stewart, author of In Pursuit of the Unknown“A charming tour through the realm of the very, very, very numerous, from the ancient world through the distant future.”–Jordan Ellenberg, author of Shape

Richard Okura Elwes is an associate professor at the University of Leeds and a Holgate Session Leader for the London Mathematical Society. He lives in Leeds, UK.