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81 prime factorization

What is 81 prime factorization?

Find the prime factorization of 81

81 is divisible by 9:

81 ÷ 9 = 9

9 is not a prime number.

See Prime numbers 1 through 50.

The prime factorization of 9 is

9 = 3 * 3

See 9 prime factorization.

Therefore, the prime factorization of 81 is

81 =
3 * 3 * 3 * 3

The prime factorization of 81 using exponents

81 = 34

So, the prime factors of 81 are

3, 3, 3, 3