Former President Jimmy Carter will become America's longest-living president ever on Friday, surpassing former President George H.W. Bush.

As of March 22, Carter will be 94 years and 172 days old, a day older than Bush was when he died last November.

Bush himself became the longest-living president in U.S. history in 2017.

Just a few former presidents have lived past the 90-year mark, including former President Ronald Reagan, Carter's successor, who lived to be 93.

The Carter Center, the former president's human rights and anti-poverty organization, told the Atlanta Journal-Constitution in a statement that the center's staff was "rooting" for the former president, who remains an active volunteer along with his wife, Rosalynn Carter.

"We at the Carter Center sure are rooting for him and are grateful for his long life of service that has benefited millions of the world's poorest people," the center told the Journal-Constitution.

The couple have remained active supporters of Habitat for Humanity, the nation's most prominent housing charity, since leaving the White House and announced last year that they planned to join the organization for volunteer work in Nashville later in 2019.

"President and Mrs. Carter know the cause of affordable housing is only becoming more urgent, and so we are so grateful they will once again mobilize hundreds of hands and thousands more voices to this cause," said the organization's CEO, Jonathan Reckford, in a press release last year.

"Through the 2019 Carter Work Project, President and Mrs. Carter will shine the light on not only Nashville, but our country's struggle to address the real challenges facing the families who cannot afford safe and decent housing in their communities," Reckford added.

Volunteers who have worked with the Carters told Habitat for Humanity that the two have an unstoppable work ethic.

"After 35 years, no one would question if President and Mrs. Carter wanted to take a break from the build site. But the words 'Carter' and 'retire' aren't even in the same vocabulary," Trisha Yearwood, a Habitat for Humanity volunteer, told the organization last year.

This story has been updated to correctly note that Carter tied the record Thursday and will surpass it on Friday.