Q: What are the prime factors of the number 42,114,528?

 A: 2, 3, 349, 419

Why are those the prime factors of the number 42,114,528?

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 42,114,528

42,114,528
Factor Arrows
221,057,264
Factor Arrows
210,528,632
Factor Arrows
25,264,316
Factor Arrows
22,632,158
Factor Arrows
21,316,079
Factor Arrows
3438,693
Factor Arrows
3146,231
Factor Arrows
349419

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, 349, 419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 349 x 419 = 42,114,528

This can also be written as 25 x 32 x 3491 x 4191 = 42,114,528

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


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