Q: What are the prime factors of the number 427,776?

 A: 2, 3, 557

Why are those the prime factors of the number 427,776?

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 427,776

427,776
Factor Arrows
2213,888
Factor Arrows
2106,944
Factor Arrows
253,472
Factor Arrows
226,736
Factor Arrows
213,368
Factor Arrows
26,684
Factor Arrows
23,342
Factor Arrows
21,671
Factor Arrows
3557

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, 557

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 3 x 557 = 427,776

This can also be written as 28 x 31 x 5571 = 427,776

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


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