Q: What are the prime factors of the number 258,021,000?

 A: 2, 3, 5, 28669

Why are those the prime factors of the number 258,021,000?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 258,021,000

258,021,000
Factor Arrows
2129,010,500
Factor Arrows
264,505,250
Factor Arrows
232,252,625
Factor Arrows
310,750,875
Factor Arrows
33,583,625
Factor Arrows
5716,725
Factor Arrows
5143,345
Factor Arrows
528,669

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 28669

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 5 x 5 x 28,669 = 258,021,000

This can also be written as 23 x 32 x 53 x 28,6691 = 258,021,000

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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