Q: What is the prime factorization of the number 66,526,409?

 A:
  • The prime factors are: 83 x 557 x 1,439
    • or also written as { 83, 557, 1,439 }
  • Written in exponential form: 831 x 5571 x 1,4391

Why is the prime factorization of 66,526,409 written as 831 x 5571 x 1,4391?

What is prime factorization?

Prime factorization or prime factor decomposition is the process of finding which prime numbers can be multiplied together to make the original number.

Finding the prime factors of 66,526,409

To find the prime factors, you start by dividing the number by the first prime number, which is 2. If there is not a remainder, meaning you can divide evenly, then 2 is a factor of the number. Continue dividing by 2 until you cannot divide evenly anymore. Write down how many 2's you were able to divide by evenly. Now try dividing by the next prime factor, which is 3. The goal is to get to a quotient of 1.

If it doesn't make sense yet, let's try it...

Here are the first several prime factors: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29...

Let's start by dividing 66,526,409 by 2

66,526,409 ÷ 2 = 33,263,204.5 - This has a remainder. Let's try another prime number.
66,526,409 ÷ 3 = 22,175,469.6667 - This has a remainder. Let's try another prime number.
66,526,409 ÷ 5 = 13,305,281.8 - This has a remainder. Let's try another prime number.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
66,526,409 ÷ 83 = 801,523 - No remainder! 83 is one of the factors!
801,523 ÷ 83 = 9,656.9036 - There is a remainder. We can't divide by 83 evenly anymore. Let's try the next prime number
801,523 ÷ 89 = 9,005.8764 - This has a remainder. 89 is not a factor.
801,523 ÷ 97 = 8,263.1237 - This has a remainder. 97 is not a factor.
801,523 ÷ 101 = 7,935.8713 - This has a remainder. 101 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
801,523 ÷ 557 = 1,439 - No remainder! 557 is one of the factors!
1,439 ÷ 557 = 2.5835 - There is a remainder. We can't divide by 557 evenly anymore. Let's try the next prime number
1,439 ÷ 563 = 2.556 - This has a remainder. 563 is not a factor.
1,439 ÷ 569 = 2.529 - This has a remainder. 569 is not a factor.
1,439 ÷ 571 = 2.5201 - This has a remainder. 571 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
1,439 ÷ 1,439 = 1 - No remainder! 1,439 is one of the factors!

The orange divisor(s) above are the prime factors of the number 66,526,409. If we put all of it together we have the factors 83 x 557 x 1,439 = 66,526,409. It can also be written in exponential form as 831 x 5571 x 1,4391.

Factor Tree

Another way to do prime factorization is to use a factor tree. Below is a factor tree for the number 66,526,409.

66,526,409
Factor Arrows
83801,523
Factor Arrows
5571,439

More Prime Factorization Examples

66,526,40766,526,40866,526,41066,526,411
33 x 371 x 66,593123 x 131 x 639,677121 x 31 x 51 x 191 x 1271 x 919171 x 9,503,7731

Try the factor calculator

Explore more about the number 66,526,409:


Ask a Question