No because they are all composite numbers having more than two factors
3, 9, 27, 81, 243
The multiples of 81 are infinite. The factors of 81 are: 1, 3, 9, 27, 81.
3, 9, 27, 81, 243, 729 and so on.
3, 9, 27, 81, 243
3, 9, 27, 81, 243, 729 and so on.
3, 9, 27, 81, 243, 729
3, 9, 27, 81, 243, 729
The greatest common factor for the numbers 27 and 81 are 27.
The factors of 81 are: 1 3 9 27 81 The prime factor is: 3
Any of its factors which are: 1, 3, 9, 27 and 81
81 = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1
3, 9, 27, 81, 243, 729