The prime factor of 81 is 3^4. A prime number is a number greater than one that is evenly divisible only by itself and one. A composite number, such as 81, is a number that has factors other than itself and one.
Know MoreTo find the prime factorization of 81, take two numbers that multiply together to make 81, such as 9 x 9. Nine is a composite number that is further broken down into 3 x 3. Break down both nines in this manner. Three is a prime number, so the prime factorization of 81 is 3 x 3 x 3 x 3, or 3^4.
Learn more about NumbersThe prime factors of 12 are 2 and 3. A prime number is a number greater than 1 that cannot be divided by any number except itself and 1. Both 2 and 3 are prime factors of 12 because they are prime numbers that can be divided into 12 with nothing remaining.
Full Answer >The prime factors of 6 are 2 and 3. The number 6 cannot be factorized into any other combination of prime numbers. A prime number is a whole number larger than 1 which can only be divided by 1 and itself.
Full Answer >The prime factors of 75 are 3 and 5. A prime factor is any factor of a number that is also a prime number. A prime number is a designation for numbers that only have two factors: 1 and themselves.
Full Answer >The prime factors of 45 are three, three and five. These three numbers represent the unique combination of prime numbers that, when multiplied together, produce 45 as an answer.
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