Q: What are the prime factors of the number 723,276?

 A: 2, 3, 37, 181

Why are those the prime factors of the number 723,276?

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 723,276

723,276
Factor Arrows
2361,638
Factor Arrows
2180,819
Factor Arrows
360,273
Factor Arrows
320,091
Factor Arrows
36,697
Factor Arrows
37181

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, 37, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 37 x 181 = 723,276

This can also be written as 22 x 33 x 371 x 1811 = 723,276

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


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