Q: What are the prime factors of the number 173,274,420?

 A: 2, 3, 5, 11, 29, 823

Why are those the prime factors of the number 173,274,420?

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 173,274,420

173,274,420
Factor Arrows
286,637,210
Factor Arrows
243,318,605
Factor Arrows
314,439,535
Factor Arrows
52,887,907
Factor Arrows
11262,537
Factor Arrows
1123,867
Factor Arrows
29823

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, 11, 29, 823

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 11 x 11 x 29 x 823 = 173,274,420

This can also be written as 22 x 31 x 51 x 112 x 291 x 8231 = 173,274,420

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


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