Q: What are the prime factors of the number 538,858,528?

 A: 2, 13, 37, 2693

Why are those the prime factors of the number 538,858,528?

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 538,858,528

538,858,528
Factor Arrows
2269,429,264
Factor Arrows
2134,714,632
Factor Arrows
267,357,316
Factor Arrows
233,678,658
Factor Arrows
216,839,329
Factor Arrows
131,295,333
Factor Arrows
1399,641
Factor Arrows
372,693

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, 13, 37, 2693

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 13 x 37 x 2,693 = 538,858,528

This can also be written as 25 x 132 x 371 x 2,6931 = 538,858,528

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


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