Q: What are the prime factors of the number 320,034,432?

 A: 2, 3, 107, 7789

Why are those the prime factors of the number 320,034,432?

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 320,034,432

320,034,432
Factor Arrows
2160,017,216
Factor Arrows
280,008,608
Factor Arrows
240,004,304
Factor Arrows
220,002,152
Factor Arrows
210,001,076
Factor Arrows
25,000,538
Factor Arrows
22,500,269
Factor Arrows
3833,423
Factor Arrows
1077,789

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, 107, 7789

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 3 x 107 x 7,789 = 320,034,432

This can also be written as 27 x 31 x 1071 x 7,7891 = 320,034,432

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


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