Q: What are the prime factors of the number 636,432?

 A: 2, 3, 13259

Why are those the prime factors of the number 636,432?

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 636,432

636,432
Factor Arrows
2318,216
Factor Arrows
2159,108
Factor Arrows
279,554
Factor Arrows
239,777
Factor Arrows
313,259

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, 13259

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 13,259 = 636,432

This can also be written as 24 x 31 x 13,2591 = 636,432

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


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