https://arstechnica.com/information-technology/2023/01/fear-...

22 bits is in the range that it could be factored by hand, with the aid of some prime number tables.

According to the article, they used D-wave's quantum annealing, which models optimization problems, not Shor's algorithm, so it's not clear how they used quantum effects (except for publicity).

Also from the same publication a year ago:

https://www.csoonline.com/article/574717/can-a-quantum-algor...