Lawrence “Larry” Page (born March 26, 1973) is an American computer scientist and Internet entrepreneur who, with Sergey Brin, is best known as the co-founder of Google. On April 4, 2011, he took on the role of chief executive officer of Google, replacing Eric Schmidt. As of 2012, his personal wealth is estimated to be $20.3 billion, ranking him #13 on the Forbes 400 list of richest Americans. He is the inventor of PageRank, which became the foundation of Google’s search ranking algorithm.