Q: What are the prime factors of the number 478,141,280?

 A: 2, 5, 199, 15017

Why are those the prime factors of the number 478,141,280?

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 478,141,280

478,141,280
Factor Arrows
2239,070,640
Factor Arrows
2119,535,320
Factor Arrows
259,767,660
Factor Arrows
229,883,830
Factor Arrows
214,941,915
Factor Arrows
52,988,383
Factor Arrows
19915,017

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, 5, 199, 15017

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 199 x 15,017 = 478,141,280

This can also be written as 25 x 51 x 1991 x 15,0171 = 478,141,280

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


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