Q: What is the prime factorization of the number 103,180,089?

 A:
  • The prime factors are: 3 x 17 x 19 x 233 x 457
    • or also written as { 3, 17, 19, 233, 457 }
  • Written in exponential form: 31 x 171 x 191 x 2331 x 4571

Why is the prime factorization of 103,180,089 written as 31 x 171 x 191 x 2331 x 4571?

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 103,180,089

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 103,180,089 by 2

103,180,089 ÷ 2 = 51,590,044.5 - This has a remainder. Let's try another prime number.
103,180,089 ÷ 3 = 34,393,363 - No remainder! 3 is one of the factors!
34,393,363 ÷ 3 = 11,464,454.3333 - There is a remainder. We can't divide by 3 evenly anymore. Let's try the next prime number
34,393,363 ÷ 5 = 6,878,672.6 - This has a remainder. 5 is not a factor.
34,393,363 ÷ 7 = 4,913,337.5714 - This has a remainder. 7 is not a factor.
34,393,363 ÷ 11 = 3,126,669.3636 - This has a remainder. 11 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
34,393,363 ÷ 17 = 2,023,139 - No remainder! 17 is one of the factors!
2,023,139 ÷ 17 = 119,008.1765 - There is a remainder. We can't divide by 17 evenly anymore. Let's try the next prime number
2,023,139 ÷ 19 = 106,481 - No remainder! 19 is one of the factors!
106,481 ÷ 19 = 5,604.2632 - There is a remainder. We can't divide by 19 evenly anymore. Let's try the next prime number
106,481 ÷ 23 = 4,629.6087 - This has a remainder. 23 is not a factor.
106,481 ÷ 29 = 3,671.7586 - This has a remainder. 29 is not a factor.
106,481 ÷ 31 = 3,434.871 - This has a remainder. 31 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
106,481 ÷ 233 = 457 - No remainder! 233 is one of the factors!
457 ÷ 233 = 1.9614 - There is a remainder. We can't divide by 233 evenly anymore. Let's try the next prime number
457 ÷ 239 = 1.9121 - This has a remainder. 239 is not a factor.
457 ÷ 241 = 1.8963 - This has a remainder. 241 is not a factor.
457 ÷ 251 = 1.8207 - This has a remainder. 251 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
457 ÷ 457 = 1 - No remainder! 457 is one of the factors!

The orange divisor(s) above are the prime factors of the number 103,180,089. If we put all of it together we have the factors 3 x 17 x 19 x 233 x 457 = 103,180,089. It can also be written in exponential form as 31 x 171 x 191 x 2331 x 4571.

Factor Tree

Another way to do prime factorization is to use a factor tree. Below is a factor tree for the number 103,180,089.

103,180,089
Factor Arrows
334,393,363
Factor Arrows
172,023,139
Factor Arrows
19106,481
Factor Arrows
233457

More Prime Factorization Examples

103,180,087103,180,088103,180,090103,180,091
371 x 471 x 59,333123 x 112 x 106,591121 x 51 x 131 x 311 x 25,603171 x 431 x 342,7911

Try the factor calculator

Explore more about the number 103,180,089:


Ask a Question