Logic Masters Deutschland e.V.

Traditional Sudoku rules apply. In addition, each cage's number corresponds to the largest prime factor of the 3-digit base-10 number formed by the cells in the it, read left-to-right or top-to-bottom, including unlabeled cages. All cage numbers are distinct and none exceed 107.

This is a puzzle I made around the same time as the other 2 on my account, but never uploaded, probably because (fair warning) this puzzle might be unpleasant to those who can't quickly factor 3-digit numbers. If you're up for a trial-and-error-intensive puzzle though, give it a try ^^

If you want, you can solve it using this link https://f-puzzles.com/?id=26nb45n3 . If you use that link, I recommend changing the mode from Solving to Setting so that you can label the unlabeled cages. Cages are under "Cosmetic Tools".