FACTOR TREE OF 81
Factorization tree of 81 is shown below.
(81 = 34)
The only prime factor of 81 is 3
Prime factorization of 81 is as following.
Without Exponents: 81 = 3 × 3 × 3 × 3
With Exponents: 81 = 34
In addition to the upside-down division method, in order to produce the prime factorization of a composite number, we can use factor trees.
At every step, we find two factors of a composite number at one of the ends of the tree. We repeat the process until all ends are prime.