Jordan Romero called his mother by satellite phone from the summit of the world's highest mountain, 29,035 feet (8,850 meters) above sea level. He is now one climb away from his quest to conquer the highest peaks on all seven continents.
"He says, 'Mom, I'm calling you from the top of the world,'" Leigh Anne Drake told The Associated Press from California, where she had watched her son's progress on a GPS tracker online.
"There were lots of tears and 'I love you! I love you!'" Drake said. "I just told him to get his butt back home."
The teenager with long curly hair - who climbed Mount Kilimanjaro in Africa when he was 9 years old
- says he was inspired by a painting in his school hallway of the seven continents' highest summits.
"Every step I take is finally toward the biggest goal of my life, to stand on top of the world," Jordan said earlier on his blog.
The former record for the youngest climber to scale Everest had been held by Temba Tsheri of Nepal. He reached the peak at age 16.
Also Saturday, officials said a Nepalese Sherpa who lives in the Salt Lake City suburb of Draper broke his own world record by climbing Everest for the 20th time. Apa, who goes by one name, went up with fellow climbers on a mission also to collect garbage, a growing environmental problem on the mountain.
Mountaineering Department official Tilak Pandey said several climbers took advantage of Saturday's clear weather to reach the summit.
Jordan's climbing team reached the peak hours earlier than expected.
"The first thing, they all hugged each other and said, 'I love you, I can't believe we're finally here' and started crying," said Rob Bailey, the team's spokesman, by phone from the United States.
Jordan, from Big Bear, California, was climbing Everest with his father, his father's girlfriend and three Sherpa guides. He left for the peak from the base camp on the Chinese side.
Everest was his first challenge above 26,240 feet (8,000 meters).
Unlike neighboring Nepal, the other approach to Everest, China has no age limit for climbers. Jordan registered with Chinese officials in April, said Zhang Mingxing, secretary general of China Tibet Mountaineering Association.
No interview with Jordan would be possible until he returns to advance base camp, which could take a couple of days, Bailey said. Climbers stay overnight at three or four camps before the summit, depending on their route and pace.