29
How about: 23+3 = 26 as one example
They are: 23+3 = 26
29
13, 17, and 13. 13+13 = 26 + 17 = 43
No three odd numbers can add up to an even number.
103
83, 3,and 2 are prime numbers which add up to 88.
53 and 3 are two prime numbers that add up to 56
2 numbers that add up to 8
39
204
29 and 3