Q: What are the prime factors of the number 287,274?

 A: 2, 3, 13, 29, 127

Why are those the prime factors of the number 287,274?

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 287,274

287,274
Factor Arrows
2143,637
Factor Arrows
347,879
Factor Arrows
133,683
Factor Arrows
29127

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, 13, 29, 127

We can check our work by multiplying all of the prime factors together: 2 x 3 x 13 x 29 x 127 = 287,274

This can also be written as 21 x 31 x 131 x 291 x 1271 = 287,274

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


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