Q: What are the prime factors of the number 553,392?

 A: 2, 3, 7, 61

Why are those the prime factors of the number 553,392?

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 553,392

553,392
Factor Arrows
2276,696
Factor Arrows
2138,348
Factor Arrows
269,174
Factor Arrows
234,587
Factor Arrows
311,529
Factor Arrows
33,843
Factor Arrows
31,281
Factor Arrows
3427
Factor Arrows
761

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, 7, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 7 x 61 = 553,392

This can also be written as 24 x 34 x 71 x 611 = 553,392

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


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