Q: What are the prime factors of the number 17,970,432?

 A: 2, 3, 23399

Why are those the prime factors of the number 17,970,432?

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 17,970,432

17,970,432
Factor Arrows
28,985,216
Factor Arrows
24,492,608
Factor Arrows
22,246,304
Factor Arrows
21,123,152
Factor Arrows
2561,576
Factor Arrows
2280,788
Factor Arrows
2140,394
Factor Arrows
270,197
Factor Arrows
323,399

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, 23399

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 2 x 3 x 23,399 = 17,970,432

This can also be written as 28 x 31 x 23,3991 = 17,970,432

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


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