Q: What are the prime factors of the number 4,672,890?

 A: 2, 3, 5, 641

Why are those the prime factors of the number 4,672,890?

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 4,672,890

4,672,890
Factor Arrows
22,336,445
Factor Arrows
3778,815
Factor Arrows
3259,605
Factor Arrows
386,535
Factor Arrows
328,845
Factor Arrows
39,615
Factor Arrows
33,205
Factor Arrows
5641

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, 641

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 641 = 4,672,890

This can also be written as 21 x 36 x 51 x 6411 = 4,672,890

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


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