# Prime Factors of 687

Prime Factors of 687 are 3 and 229

#### How to find prime factors of a number

 1.   Prime Factorization of 687 by Division Method 2.   Prime Factorization of 687 by Factor Tree Method 3.   Definition of Prime Factors 4.   Frequently Asked Questions

#### Steps to find Prime Factors of 687 by Division Method

To find the primefactors of 687 using the division method, follow these steps:

• Step 1. Start dividing 687 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 687, which is 3. Divide 687 by 3 to obtain the quotient (229).
687 ÷ 3 = 229
• Step 3. Repeat step 1 with the obtained quotient (229).
229 ÷ 229 = 1

So, the prime factorization of 687 is, 687 = 3 x 229.

#### Steps to find Prime Factors of 687 by Factor Tree Method

We can follow the same procedure using the factor tree of 687 as shown below:

So, the prime factorization of 687 is, 687 = 3 x 229.

#### How do you define Prime Factors of a number?

Prime numbers, in mathematics are all those natural numbers greater than 1 that have exactly 2 factors which are 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 687 are 3 x 229.

#### 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 687 but not a prime factor of 687.

• Which is the smallest prime factor of 687?

Smallest prime factor of 687 is 3.

• What are the factors of 687?

Factors of 687 are 1 , 3 , 229 , 687.

• What is prime factorization of 687 in exponential form?

Prime factorization of 687 in exponential form is 3 x 229.

• Is 687 a prime number or a composite number?

687 is a composite number.

• Is 687 a prime number?

false, 687 is not a prime number.

• What is the sum of all prime factors of 687?

Prime factors of 687 are 3 x 229. Therefore, their sum is 232.

• What is the product of all prime factors of 687?

Prime factors of 687 are 3 x 229. Therefore, their product is 687.

• What numbers are the prime factors of 687?

Prime factors of 687 are 3 , 229.

• What is the sum of all odd prime factors of 687?

Prime factors of 687 are 3 , 229, out of which 3 , 229 are odd numbers. So, the sum of odd prime factors of 687 is 3 + 229 = 232.