Q: What are the prime factors of the number 477,638,700?

 A: 2, 3, 5, 7, 11, 23, 29, 31

Why are those the prime factors of the number 477,638,700?

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 477,638,700

477,638,700
Factor Arrows
2238,819,350
Factor Arrows
2119,409,675
Factor Arrows
339,803,225
Factor Arrows
57,960,645
Factor Arrows
51,592,129
Factor Arrows
7227,447
Factor Arrows
1120,677
Factor Arrows
23899
Factor Arrows
2931

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, 7, 11, 23, 29, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 7 x 11 x 23 x 29 x 31 = 477,638,700

This can also be written as 22 x 31 x 52 x 71 x 111 x 231 x 291 x 311 = 477,638,700

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


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