2 is the only even Prime number, all other prime numbers are odd
Adding 3 odd number gives an odd number
So 2 is one of the 3 prime number, then the problem is equal to:
what 2 odd prime numbers add up to 28?
Odd Prime numbers less than 28 are: 3, 5, 7, 11, 13, 17, 19, 23
The only solutions (for 28)are: 5+23, 11+17
So the solutions (for 30) are: 2+5+23, 2+11+17
29 and 3
83, 3,and 2 are prime numbers which add up to 88.
53 and 3 are two prime numbers that add up to 56
7 and 23 are one pair.
137 and 11 are two prime numbers that add up to 148.
It is impossible for three prime numbers less than 30 to add up to 1955. After all, 30+30+30 is only 90.
13 & 17
29 and 3
The only number between 30 and 40 with distinct prime factors which add up to 12 is 35.
30 = 7 + 23 = 11 + 19 = 13 + 17
7 + 2311 + 1913 + 17
30
33
83, 3,and 2 are prime numbers which add up to 88.
53 and 3 are two prime numbers that add up to 56
There are no two prime numbers that add up to be 152.
7 and 23 are one pair.