Rules:
Normal sudoku rules apply. Each circle contains the largest prime factor of the number(s) given by the connected line(s), read with the units digit at the tip. No factorization occurs more than once. 1 is prime for the purpose of this puzzle.
Example:
Solution code: Row 1
on 23. December 2023, 14:36 by tretro
Some calculations needed on the side. Anyway great puzzle once I didn't trip over my own feet anymore.
on 26. August 2023, 17:33 by Faiyarel
clarification of the rules