It's not tsar bomb it's tsar bomba
the tsar was ~54x as powerful as the fat man, presuming I remember correctly. So. You're halfway there! :3
And i dont know what those people were thinking when making the tsar, its so powerful they might have been trying to split atoms.
Its callled the Ivy Mike/, not king. And the Tsar is WAY more powerful than THAT excuse for a tsar.