The prime factorization of 81 is 3 x 3 x 3 x 3, or 3 ^ 4. Prime factorization of a number involves finding the prime numbers that, when multiplied together, yield that number.
Continue ReadingA prime number is a number that is divisible only by itself and one. Neither zero nor one is considered a prime number. To complete prime factorization on 81, find a common pair of dividends that multiplied together equal 81. Nine times nine equals 81, but nine is not a prime number because it is divisible by three. Break down each nine into three times three. Three is a prime number since only three and one are factors of it. Three times three times three times three is equal to 81.
Learn more about AlgebraThe prime factors of 56 are 2 x 2 x 2 x 7. Prime factors of an original number are prime numbers that — when multiplied together — give back the original number. Finding the prime factors of a number is called prime factorization.
Full Answer >The prime factorization of 40 is 40 = 2 x 2 x 2 x 5. To find the prime factorization of any number, x, one must determine which prime numbers multiple together to equal x.
Full Answer >The prime factorization of 32 is 2 x 2 x 2 x 2 x 2. The prime factors of a number are numbers that are both factors and prime. In this case, the only factor of 32 that is prime is 2.
Full Answer >The prime factorization of 42 is 2 x 3 x 7. The prime factors of a number are numbers that are both factors and prime at the same time.
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