Q: What are the prime factors of the number 531,000?

 A: 2, 3, 5, 59

Why are those the prime factors of the number 531,000?

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 531,000

531,000
Factor Arrows
2265,500
Factor Arrows
2132,750
Factor Arrows
266,375
Factor Arrows
322,125
Factor Arrows
37,375
Factor Arrows
51,475
Factor Arrows
5295
Factor Arrows
559

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, 59

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 59 = 531,000

This can also be written as 23 x 32 x 53 x 591 = 531,000

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


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