Googolplex

A googolplex is the large number 10^googol, or equivalently, 10¹⁰¹⁰⁰ or 10^{10,000,000,000,​000,000,000,​000,000,000,​000,000,000,​000,000,000,​000,000,000,​000,000,000,​000,000,000,​000,000,000,​000,000,000,​000,000,000}. Written out in ordinary decimal notation, it is 1 followed by 10¹⁰⁰ zeroes; that is, a 1 followed by a googol of zeroes. Its prime factorization is 2^googol ×5^googol.