Number VIII: Axel.
Proof of Existence: The Flurry of Dancing Flames.
Element: Fire
Weapon: Chakrams.
The prime number between 8 and 13 is 11.
Since 8 is smaller than 13, 8/13 is not a mixed number not improper fraction.
13/8 as a mixed number is 1 and 5/8
8.13 = 8 13/100
It is 1 5/8 = 13/8.
13 is a prime number so none
So to do this the number needs to be greater than 13 by at least 8. So an equation could be 13 + 8 = x X = 21
They are both prime numbers and 13-5 = 8 which is a composite number
21
If you mean: 1 2 3 5 8 13 then the next number is 8+13 = 21
1 8/13
0.6154