Normal sudoku rules apply. The digits in each cage sum to a prime number but no two cages sum to the same prime. Digits in a cage MAY repeat. For convenience, the prime numbers from 1 to 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.