54
6 x 9
(2x3) x (3x3)
Since 2 and 3 are prime numbers, the factor tree is complete.
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54 27,2 9,3,2 3,3,3,2 2 x 3 x 3 x 3 = 54
54 = 1 x 54 54 = 2 x 27 54 = 3 x 18 54 = 6 x 9
Since 54 is a factor of 108, it is automatically the GCF.
The greatest common factor of 54 , 90 = 18
No. 54 isn't prime.