Logic Masters Deutschland e.V.

Here's a sequel to my Bullseye Sudoku puzzle:

• Normal sudoku rules apply.
• The sum of the numbers in each ring will appear in the circled cells.
  • The sums are 5 unique prime numbers.
• The sum of all five ring totals (which unfortunately isn’t actually prime, but at least it’s a palindrome, which is still cool) will appear somewhere in the completed grid — but of course, it will have to be diagonally.
• Normal Killer sudoku rules apply.
  • Numbers cannot repeat within a killer cage.
  • Killer cage totals will have to be deduced.
  • The cages within each colored ring contain the same total, but these totals may differ from ring to ring.

Here's an F-puzzles link