Q: What are the prime factors of the number 286,368?

 A: 2, 3, 19, 157

Why are those the prime factors of the number 286,368?

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 286,368

286,368
Factor Arrows
2143,184
Factor Arrows
271,592
Factor Arrows
235,796
Factor Arrows
217,898
Factor Arrows
28,949
Factor Arrows
32,983
Factor Arrows
19157

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, 19, 157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 19 x 157 = 286,368

This can also be written as 25 x 31 x 191 x 1571 = 286,368

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


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