Jimmy Carter becomes the oldest living president ever on Friday, beating out George H.W. Bush, who died at the age of 94 years and 171 days. Carter, who will turn 95 on Oct. 1, turns 94 years and 172 days on Friday. Just four years ago, in 2015, the 39th president was diagnosed with brain cancer and thought he might die. “I thought I only had maybe two weeks to live,” he told USA Today. “So I told goodbye to my family and to the Carter Center staff who work with me.” Instead, the Nobel Peace Prize winner remains active in the Carter Center and Habitat for Humanity with his wife, Rosalynn. “Both President and Mrs. Carter are determined to use their influence for as long as they can to make the world a better place,” the Carter Center said in a statement. “Their tireless resolve and heart have helped to improve life for millions of the world's poorest people.”