Q: What are the prime factors of the number 388,432?

 A: 2, 11, 2207

Why are those the prime factors of the number 388,432?

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 388,432

388,432
Factor Arrows
2194,216
Factor Arrows
297,108
Factor Arrows
248,554
Factor Arrows
224,277
Factor Arrows
112,207

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, 11, 2207

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 2,207 = 388,432

This can also be written as 24 x 111 x 2,2071 = 388,432

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


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