Q: What are the prime factors of the number 386,624,178?

 A: 2, 3, 41, 19403

Why are those the prime factors of the number 386,624,178?

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 386,624,178

386,624,178
Factor Arrows
2193,312,089
Factor Arrows
364,437,363
Factor Arrows
321,479,121
Factor Arrows
37,159,707
Factor Arrows
32,386,569
Factor Arrows
3795,523
Factor Arrows
4119,403

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, 41, 19403

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 41 x 19,403 = 386,624,178

This can also be written as 21 x 35 x 411 x 19,4031 = 386,624,178

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


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