Factors of 81
The factors of 81 are 1, 3, 9, 27, 81. No, 81 is a composite number. Its prime factorization is 3^4.
Factors of 81
1, 3, 9, 27, 81
Prime or Composite
Composite
Perfect Square
Yes
Prime Factorization
3^4
Sum of Factors
121
| Factor Pairs |
|---|
| 1 × 81 = 81 |
| 3 × 27 = 81 |
| 9 × 9 = 81 |
Frequently Asked Questions
What are the factors of 81?
The factors of 81 are 1, 3, 9, 27, 81.
Is 81 a prime number?
No, 81 is a composite number. Its prime factorization is 3^4.
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