Q: What are the prime factors of the number 365,715?

 A: 3, 5, 7, 43

Why are those the prime factors of the number 365,715?

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 365,715

365,715
Factor Arrows
3121,905
Factor Arrows
340,635
Factor Arrows
313,545
Factor Arrows
34,515
Factor Arrows
31,505
Factor Arrows
5301
Factor Arrows
743

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:

3, 5, 7, 43

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 7 x 43 = 365,715

This can also be written as 35 x 51 x 71 x 431 = 365,715

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


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