13 is a Prime number because it has only two factors which are itself and one.
13 x 1
13+(-12) = 1
13 squared (13 x 13) = 169
The only numbers that divide 13 evenly (the factors of 13) are 1 and 13.This makes 13 a prime number.
When they reach the age of 13!
6,13,27,55, 111, 223 ... Here is why: 6 + (1x7) makes 13 13 + (2x7) makes 27 27 + (4x7) makes 55 55 + (8x7) makes 111 111 + (16x7) makes 223 Or this way explains the answer using powers of 2: (7x20)-1 makes 6 (7x21)-1 makes 13 (7x22)-1 makes 27 (7x23)-1 makes 55 (7x24)-1 makes 111 (7x25)-1 makes 223
4 x 13
5
it was one of the 13 colonies
13 or 12
5 x 13
It is: 13