Q: What are the prime factors of the number 523,555,328?

 A: 2, 29, 37, 953

Why are those the prime factors of the number 523,555,328?

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 523,555,328

523,555,328
Factor Arrows
2261,777,664
Factor Arrows
2130,888,832
Factor Arrows
265,444,416
Factor Arrows
232,722,208
Factor Arrows
216,361,104
Factor Arrows
28,180,552
Factor Arrows
24,090,276
Factor Arrows
22,045,138
Factor Arrows
21,022,569
Factor Arrows
2935,261
Factor Arrows
37953

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, 29, 37, 953

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 2 x 29 x 37 x 953 = 523,555,328

This can also be written as 29 x 291 x 371 x 9531 = 523,555,328

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


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