Kristal celebrated his bar mitzvah in September 2016 at age 113 after being unable to do so at age 13 due to World War I, and was the 16th man to live to age 113. That year, Kristal, who was the oldest survivor of the Holocaust, also became the world's oldest living man and last living man born in 1903, after Japaneseman Yasutaro Koide's death on January 18 (Koide died January 19 Japanese time).