Ms Tajima, who became the oldest woman in Japan in September 2015, could have been the world's oldest person since Ms Violet Brown of Jamaica died in September a year ago at age 117, Japanese media said. Miyako, 116, was born on May 2, 1901.
Indonesia didn't start formally recording birth dates until decades later, and thus Sodimejo's claims failed the gerontology litmus test.
She became the world's oldest person in September following the death of Violet Brown, in Jamaica, at the age of 117. Video on Japanese television showed Tajima moving her hands to the beat of music played on traditional Japanese instruments at a ceremony to mark the achievement.
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Born Aug. 4, 1900, she passed away at the age of 117 and 280 days, meaning she was was the last known person alive who had experienced the 19th century.
Yoshida lives south of Tokyo in Kanagawa prefecture, and is due to turn 117 in 10 days. "We, as her family members, are very happy about her longevity", Miyako's family said in a release.
Masazo Nonaka, also of Japan, is the world's oldest man at 112 years old. But women - and residents of Japan - dominate the list.
Last year Japan Government said, there are nearly 68,000 people aged 100 or older in the country.