Q: What are the prime factors of the number 249,642?

 A: 2, 3, 23, 67

Why are those the prime factors of the number 249,642?

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 249,642

249,642
Factor Arrows
2124,821
Factor Arrows
341,607
Factor Arrows
313,869
Factor Arrows
34,623
Factor Arrows
31,541
Factor Arrows
2367

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, 23, 67

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 23 x 67 = 249,642

This can also be written as 21 x 34 x 231 x 671 = 249,642

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


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