Fatto matematico: 529 is the smallest number n so that the continued fraction for n/k contains no 2's for any 1 = k = n.
Trivia: 529 is an unremarkable number.
Data storica: June 12th is the day in 1967 that the United States Supreme Court in Loving v. Virginia declares all U.S. state laws which prohibit interracial marriage to be unconstitutional.