ATLANTA (AP) — Jimmy Carter has achieved his 100th birthday Tuesday marked the first time in a century for an American president and the latest milestone in a life that has brought the son of a Depression-era farmer to the White House as a Nobel Peace Prize-winning humanitarian and champion of democracy led the whole world.

Lived at home for the last 19 months Hospice care in Plains, the Georgia Democrat and 39th President has continued to exceed all expectations, just as he has risen to the world stage through a remarkable rise from his family peanut farming and storage business. He served one term as president from 1977 to 1981 and then spent more than four decades leading the Carter Center, which he and his wife Rosalynn co-founded in 1982 to “build peace, fight disease and inspire hope.”

“Not everyone lives to 100 years on this earth, and when someone makes it and uses that time to do so much good for so many people, it's worth celebrating,” said Jason Carter, the former president's grandson and chairman of the Carter Center board said in an interview.

“The last few months, 19 months, now that he's in hospice, have been an opportunity for our family to reflect,” he continued, “and then for the rest of the country and the world to really reflect on him.” That was a really enjoyable time.”

James Earl Carter Jr. was born on October 1, 1924 in Plains, where he lived more than 80 of his 100 years. He is expected to celebrate 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.

President Joe Biden, the first sitting senator to endorse Carter's 1976 campaign, praised his longtime friend for his “unwavering belief in the power of human kindness.”

“You have always been a moral force for our nation and the world (and) a beloved friend to Jill, me and our family,” the 81-year-old president says to Carter in a tribute video filmed in front of Carter's presidential portrait in white A house.

Outside the north portico, the Bidens are placing a large sign that reads “Happy Birthday President Carter” and the number 100. Carter Biden asked to praise him at his state funeral in due course.

The Carter Center hosted one on September 17th musical gala in Atlanta to celebrate the former president with a range of genres and artists, including some who campaigned with him in 1976. The event raised more than $1.2 million for the center's programs and will air Tuesday evening on Georgia Public Broadcasting.

In St. Paul, Minnesota, Habitat for Humanity volunteers honored Carter with a five-day effort to build 30 homes. The Carters became top ambassadors for the international organization after leaving the White House, hosting annual construction projects into their 90s. Carter survived a cancer diagnosis and treatment in his early 90s, then multiple falls and a hip replacement in his mid-90s before announcing at 98 that he would enter hospice care.

Plains townspeople planned another concert Tuesday night.

The last time Jimmy Carter was seen in public was almost a year ago when he used a lawn chair to visit his wife two funeral services. Visibly diminished and silent, he was joined in the front row at Glenn Memorial United Methodist Church in Atlanta by the couple's four children, all living former first lady, Biden and his wife Jill, and former President Bill Clinton. A day later, Carter joined his extended family and parishioners at Maranatha Baptist Church in Plains, where the former president taught Sunday school for decades.

Jason Carter said the 100th birthday celebration was not something the family expected after his grandmother's death. The former president's hospital bed had been placed in the same room so he could see his Wife of 77 years and talk to her in her final days and hours.

“We honestly didn’t think he was going to last much longer,” Jason Cater said. “But for him it’s a journey of faith and he’s really committed to what he believes is God’s plan. He knows he's not in charge. But especially in the last few months he has been much more concerned with world events, much more with politics, much more, just emotionally, with all of us.

Jason Carter said the centenarian president, who was born just four years after granting women the constitutional right to vote and four decades before black women had access to the ballot, is eager to cast his presidential vote in 2024 – for vice president Kamala Harristhe Democrat who would become the first woman, second Black person and first person of South Asian descent to reach the Oval Office.

“He, like many of us, was incredibly pleased by his friend Joe Biden’s courageous decision to pass the torch,” the younger Carter said. “You know, my grandfather and the Carter Center have watched more than 100 elections in 40 other countries, right? So he knows how rare it is for someone who is the sitting president to relinquish power in any context.”

Jason Carter continued, “When we started asking him about his 100th birthday, he said he was excited to vote for Kamala Harris.”

Early voting in Georgia begins Oct. 15, two weeks after Carter turns 101.