, 68 is the very last two-digit number to appear for the first time.

68 is a "happy number," meaning that if you take the sum of the squares of its digits and continue the process, you eventually reach 1. The Last Two-Digit "First" Number: In the digits of

1968 is famously remembered as a landmark year of global social and political turbulence, often referred to simply as "68".

On an infinite chessboard, there are 68 distinct squares that are exactly three knight's moves away from any starting square.