For example, American mathematician Edward Kasner's 9-year-old nephew coined the names googol and googolplex. The "Oxford English Dictionary" comments that "googol" and "googolplex" are "not in formal mathematical use". A googolplex is the number 10, or equivalently, 10. Uncomfortable, Homer drags his family to the Springfield Googolplex. The lower bound was improved to a Googolplex by Walraet and Tromp. The googolplex was often cited as the largest named number in English.