Q: What are the prime factors of the number 17,205,372?

 A: 2, 3, 31, 571

Why are those the prime factors of the number 17,205,372?

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 17,205,372

17,205,372
Factor Arrows
28,602,686
Factor Arrows
24,301,343
Factor Arrows
31,433,781
Factor Arrows
3477,927
Factor Arrows
3159,309
Factor Arrows
353,103
Factor Arrows
317,701
Factor Arrows
31571

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, 31, 571

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 31 x 571 = 17,205,372

This can also be written as 22 x 35 x 311 x 5711 = 17,205,372

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


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