Respuesta :

AL2006

The factors of  27  are  1,  3,  9, and  27 .

A prime number has only two factors.  They are ' 1 ' and itself.
27  has four factors, so it's not prime.

TSO
27 is not a prime number because it has more than 2 factors other than 1 and itself. 27's factors are 1, 3, 9, and 27.