Q: What are the prime factors of the number 531,520,320?

 A: 2, 3, 5, 553667

Why are those the prime factors of the number 531,520,320?

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 531,520,320

531,520,320
Factor Arrows
2265,760,160
Factor Arrows
2132,880,080
Factor Arrows
266,440,040
Factor Arrows
233,220,020
Factor Arrows
216,610,010
Factor Arrows
28,305,005
Factor Arrows
32,768,335
Factor Arrows
5553,667

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, 553667

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 3 x 5 x 553,667 = 531,520,320

This can also be written as 26 x 31 x 51 x 553,6671 = 531,520,320

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


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