Q: What are the prime factors of the number 542,388?

 A: 2, 3, 7, 11, 587

Why are those the prime factors of the number 542,388?

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 542,388

542,388
Factor Arrows
2271,194
Factor Arrows
2135,597
Factor Arrows
345,199
Factor Arrows
76,457
Factor Arrows
11587

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, 7, 11, 587

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 11 x 587 = 542,388

This can also be written as 22 x 31 x 71 x 111 x 5871 = 542,388

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


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