Q: What are the prime factors of the number 422,723,520?

 A: 2, 3, 5, 37, 3967

Why are those the prime factors of the number 422,723,520?

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 422,723,520

422,723,520
Factor Arrows
2211,361,760
Factor Arrows
2105,680,880
Factor Arrows
252,840,440
Factor Arrows
226,420,220
Factor Arrows
213,210,110
Factor Arrows
26,605,055
Factor Arrows
32,201,685
Factor Arrows
3733,895
Factor Arrows
5146,779
Factor Arrows
373,967

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, 37, 3967

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 3 x 3 x 5 x 37 x 3,967 = 422,723,520

This can also be written as 26 x 32 x 51 x 371 x 3,9671 = 422,723,520

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


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