Seven Perfect Shuffles Randomize a Deck of Cards. But How Many Sloppy Ones?(quantamagazine.org)
quantamagazine.org
Seven Perfect Shuffles Randomize a Deck of Cards. But How Many Sloppy Ones?
https://www.quantamagazine.org/seven-perfect-shuffles-randomize-a-deck-of-cards-but-how-many-sloppy-ones-20260617/
> According to the new proof, that ceiling is roughly 14 riffle shuffles for a 52-card deck, if you cut your deck in a random place with each shuffle. Beyond that point, the cards will be fully mixed.
Great article and worth reading even though you now know the answer. :)