Googolplex
A googolplex is the number 10googol, or equivalently, 10(10100). Written out in ordinary decimal notation, it is 1 followed by 10100 zeroes.
History
In 1920 Edward Kasner's nine-year-old nephew, Milton Sirotta, coined the term googol, which is 10100, then proposed the further term googolplex to be "one, followed by writing zeroes until you get tired". Kasner decided to adopt a more formal definition "because different people get tired at different times and it would never do to have Carnera be a better mathematician than Dr. Einstein, simply because he had more endurance and could write for longer". It thus became standardized to 10(10100).
Size
A typical book can be printed with 106 zeros (around 400 pages with 50 lines per page and 50 zeros per line). Therefore, it requires 1094 such books to print all the zeros of a googolplex (that is, printing a googol of zeros). If such a book would weigh 100 grams, all of them would weigh 1093 kilograms. In comparison, Earth's mass is 5.972 x 1024 kilograms.
Googolplex (toy)
Googolplex was a construction toy made by Arlington-Hews, Inc, intended for the educational market. It is a building toy made for children 5 and up. The starter kit includes 92 pieces of various geometric shapes including a triangle, square,and hexagon, various beams and connectors, and treads that can be attached to shapes to form wheels. It features model instructions inside the box.
