Q: What are the prime factors of the number 812,300?

 A: 2, 5, 8123

Why are those the prime factors of the number 812,300?

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 812,300

812,300
Factor Arrows
2406,150
Factor Arrows
2203,075
Factor Arrows
540,615
Factor Arrows
58,123

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, 8123

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 8,123 = 812,300

This can also be written as 22 x 52 x 8,1231 = 812,300

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


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