Q: What are the prime factors of the number 400,223,232?

 A: 2, 3, 43427

Why are those the prime factors of the number 400,223,232?

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 400,223,232

400,223,232
Factor Arrows
2200,111,616
Factor Arrows
2100,055,808
Factor Arrows
250,027,904
Factor Arrows
225,013,952
Factor Arrows
212,506,976
Factor Arrows
26,253,488
Factor Arrows
23,126,744
Factor Arrows
21,563,372
Factor Arrows
2781,686
Factor Arrows
2390,843
Factor Arrows
3130,281
Factor Arrows
343,427

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, 43427

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 43,427 = 400,223,232

This can also be written as 210 x 32 x 43,4271 = 400,223,232

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


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