The sum of all prime numbers between 1 and 11 is 28.
The sum of prime numbers between 90 and 100 is 97, the only prime number between 90 and 100.
The prime numbers between 40 and 50 are 41, 43, 47. So their sum is 131.
-20
There are not three prime numbers that have the sum of 3. The smallest prime number is 2. If all three prime numbers were 2, the sum would 2 + 2 + 2 = 6, so that is the smallest number that is the sum of three prime numbers.
The sum of all prime numbers between 60 and 75 is 272
The sum of all prime numbers between 1 and 11 is 28.
The sum of all prime numbers between 10 and 16 is 41.
The sum of all prime between numbers 1 and 400 (2 through 399) is 13,887.
The sum is 1,060
269
351
1060
582
128
Que?
311