Q: What are the prime factors of the number 529,408?

 A: 2, 11, 47

Why are those the prime factors of the number 529,408?

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 529,408

529,408
Factor Arrows
2264,704
Factor Arrows
2132,352
Factor Arrows
266,176
Factor Arrows
233,088
Factor Arrows
216,544
Factor Arrows
28,272
Factor Arrows
24,136
Factor Arrows
22,068
Factor Arrows
21,034
Factor Arrows
2517
Factor Arrows
1147

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, 11, 47

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 2 x 11 x 47 = 529,408

This can also be written as 210 x 111 x 471 = 529,408

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


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