Former President Jimmy Carter is marking his 100th birthday — the first former president in United States history to do so. It's a major milestone for Carter, who has been in hospice care at his home in Plains,

The former president was born Oct. 1, 1924 in Plains, where he has lived more than 80 of his 100 years. He is expected to mark his birthday in the same one-story home he and Rosalynn built in the early 1960s — before his first election to the Georgia state Senate. The former first lady, who was also born in Plains, died last November at 96.

Jimmy Carter is preparing to celebrate his 100th birthday on Tuesday, the first time an American president has lived a full century and the latest milestone in a life that took the son of a Depression-era farmer to the White House and across the world as a Nobel Peace Prize-winning humanitarian and advocate for democracy.