Q: What are the prime factors of the number 803,400?

 A: 2, 3, 5, 13, 103

Why are those the prime factors of the number 803,400?

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 803,400

803,400
Factor Arrows
2401,700
Factor Arrows
2200,850
Factor Arrows
2100,425
Factor Arrows
333,475
Factor Arrows
56,695
Factor Arrows
51,339
Factor Arrows
13103

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, 13, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 13 x 103 = 803,400

This can also be written as 23 x 31 x 52 x 131 x 1031 = 803,400

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


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