Prime Factors of 243

Steps to find Prime Factors of 243 by Division Method

To find the primefactors of 243 using the division method, follow these steps:

• Step 1. Start dividing 243 by the smallest prime number, i.e., 2, 3, 5, and so on. Find the smallest prime factor of the number.
• Step 2. After finding the smallest prime factor of the number 243, which is 3. Divide 243 by 3 to obtain the quotient (81).
  243 ÷ 3 = 81
• Step 3. Repeat step 1 with the obtained quotient (81).
  81 ÷ 3 = 27
  27 ÷ 3 = 9
  9 ÷ 3 = 3
  3 ÷ 3 = 1

So, the prime factorization of 243 is, 243 = 3 x 3 x 3 x 3 x 3.

Steps to find Prime Factors of 243 by Factor Tree Method

We can follow the same procedure using the factor tree of 243 as shown below:

So, the prime factorization of 243 is, 243 = 3 x 3 x 3 x 3 x 3.

What does Prime factor in mathematics mean?

Prime numbers, in mathematics are all those whole numbers greater than 1 having exactly two divisors that is 1 and the number itself. When we express any number as the product of these prime numbers than these prime numbers become prime factors of that number. Eg- Prime Factors of 243 are 3 x 3 x 3 x 3 x 3.

Properties of Prime Factors

• For any given number there is one and only one set of unique prime factors.
• 2 is the only even prime number. So, any given number can have only one even prime factor and that is 2.
• Two prime factors of a given number are always coprime to each other.
• 1 is neither a prime number nor a composite number and also 1 is the factor of every given number. So, 1 is the factor of 243 but not a prime factor of 243.

Frequently Asked Questions

• Which is the smallest prime factor of 243?

  Smallest prime factor of 243 is 3.

• Is 243 a perfect square?

  No 243 is not a perfect square.

• What is the prime factorization of 243?

  Prime factorization of 243 is 3 x 3 x 3 x 3 x 3.

• What is prime factorization of 243 in exponential form?

  Prime factorization of 243 in exponential form is 3⁵.

• Is 243 a prime number?

  false, 243 is not a prime number.

• Which is the largest prime factors of 243?

  The largest prime factor of 243 is 3.

• What is the product of all prime factors of 243?

  Prime factors of 243 are 3 x 3 x 3 x 3 x 3. Therefore, their product is 243.

• What is the sum of all odd prime factors of 243?

  Prime factors of 243 are 3 , 3 , 3 , 3 , 3, out of which 3 , 3 , 3 , 3 , 3 are odd numbers. So, the sum of odd prime factors of 243 is 3 + 3 + 3 + 3 + 3 = 15.

• What is the product of all odd prime factors of 243?

  Prime factors of 243 are 3 , 3 , 3 , 3 , 3, out of which 3 , 3 , 3 , 3 , 3 are odd numbers. So, the product of odd prime factors of 243 is 3 x 3 x 3 x 3 x 3 = 243.