Q: What are the prime factors of the number 366,240?

 A: 2, 3, 5, 7, 109

Why are those the prime factors of the number 366,240?

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 366,240

366,240
Factor Arrows
2183,120
Factor Arrows
291,560
Factor Arrows
245,780
Factor Arrows
222,890
Factor Arrows
211,445
Factor Arrows
33,815
Factor Arrows
5763
Factor Arrows
7109

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, 5, 7, 109

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 5 x 7 x 109 = 366,240

This can also be written as 25 x 31 x 51 x 71 x 1091 = 366,240

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


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