It is: 13+17 = 30
They are 23 and 29
Two of them and they are 23 and 29
The sum of all prime numbers less than 30 is 129.
15 and 2
311
They are 23 and 29
Two of them and they are 23 and 29
31 is the only prime number between 30 and 40
The prime factors of 30 are: 2 + 3 + 5 = 10
The sum of 18 + 30 is 48.
13 + 17 = 30
The sum of all prime numbers less than 30 is 129.
311
15 and 2
Add them up. The prime factors of 30 are 2, 3 and 5. You can handle the rest.
How about: 23+7 = 30 or 17+13 = 30
They are: 31+37+41+43+47+53+59 = 311The sum of all prime numbers between 30 and 60 is 311.