Q: What are the prime factors of the number 405,027,504?

 A: 2, 3, 7, 401813

Why are those the prime factors of the number 405,027,504?

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 405,027,504

405,027,504
Factor Arrows
2202,513,752
Factor Arrows
2101,256,876
Factor Arrows
250,628,438
Factor Arrows
225,314,219
Factor Arrows
38,438,073
Factor Arrows
32,812,691
Factor Arrows
7401,813

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, 7, 401813

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 7 x 401,813 = 405,027,504

This can also be written as 24 x 32 x 71 x 401,8131 = 405,027,504

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


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