13 is a Prime number so none
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no. 23 is 8, 33 is 27 and so on. the cube root of 13 is 2.3513 ----------------------------------------- The number 13 is a prime number, it can only be divided by itself and 1.
169 is the smallest such number.
20.4444
It is: 8/13 divided by 7/17 = 136/91
Negative 17 plus 121 divided by 8 equals 13.