Q: What are the prime factors of the number 321,133,000?

 A: 2, 5, 71, 4523

Why are those the prime factors of the number 321,133,000?

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 321,133,000

321,133,000
Factor Arrows
2160,566,500
Factor Arrows
280,283,250
Factor Arrows
240,141,625
Factor Arrows
58,028,325
Factor Arrows
51,605,665
Factor Arrows
5321,133
Factor Arrows
714,523

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, 5, 71, 4523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 5 x 71 x 4,523 = 321,133,000

This can also be written as 23 x 53 x 711 x 4,5231 = 321,133,000

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


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