24 is probably the worst. (Though the Russian right completely agrees.)
30 is blessed. Southern Russia was Cossack, Chechen, and Circassian (among other groups) long before the Russians arrived. The Russians even perpetrated their own genocide after they conquered the Black Sea Coast!
https://en.wikipedia.org/wiki/Circassian_genocide (Of course that wasn't talked about when the Winter Olympics were in Sochi.)
Note: Kaliningrad Oblast should be 25, not 28, since the USSR annexed it from Germany following WWII.
