There is one and only one real solution, and no imaginary solutions, of the equation x13 = 1. The solution is x = 1. If x = -1 then x13 = -1, so that does not work. If x = i, then x13 = -i, so that does not work. If x = -i, then x13 = -i, so that does not work.
5 x 13 = 65 Both 5 and 13 are prime numbers.
13"x13"
1 x13 =13
12 multiplied by 13 is 156.
The product of 18 and 13 is 234
19'x13'
3x5x5x5x13 3x53 x13
130 square feet !
Prime factorization of 960 = 26 x 3 x 5 Prime factorization of 2145 = 3 x 5 x 11 x13
1
4m-5 equals = -1