Q: What are the prime factors of the number 172,753,280?

 A: 2, 5, 7, 38561

Why are those the prime factors of the number 172,753,280?

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 172,753,280

172,753,280
Factor Arrows
286,376,640
Factor Arrows
243,188,320
Factor Arrows
221,594,160
Factor Arrows
210,797,080
Factor Arrows
25,398,540
Factor Arrows
22,699,270
Factor Arrows
21,349,635
Factor Arrows
5269,927
Factor Arrows
738,561

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, 7, 38561

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 2 x 5 x 7 x 38,561 = 172,753,280

This can also be written as 27 x 51 x 71 x 38,5611 = 172,753,280

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


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