San Antonio Spurs 21 straight playoff appearances in relation to next NBA season

The next NBA season will be the 73rd NBA season, 73 is the 21st prime.
Spurs=21, they currently have made the playoffs 21 straight seasons.
The Spurs logo is the U, U is the 21st letter in the alphabet.

Playoffs=37 reduction
Streaks=21 reduction

This streak could come to an end in the tough western conference next season, they barely made the playoffs last year and the west has gotten better.