Q: What are the prime factors of the number 440,280?

 A: 2, 3, 5, 1223

Why are those the prime factors of the number 440,280?

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 440,280

440,280
Factor Arrows
2220,140
Factor Arrows
2110,070
Factor Arrows
255,035
Factor Arrows
318,345
Factor Arrows
36,115
Factor Arrows
51,223

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, 1223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 1,223 = 440,280

This can also be written as 23 x 32 x 51 x 1,2231 = 440,280

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


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