Q: What are the prime factors of the number 5,142,042?

 A: 2, 3, 31741

Why are those the prime factors of the number 5,142,042?

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 5,142,042

5,142,042
Factor Arrows
22,571,021
Factor Arrows
3857,007
Factor Arrows
3285,669
Factor Arrows
395,223
Factor Arrows
331,741

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, 31741

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 31,741 = 5,142,042

This can also be written as 21 x 34 x 31,7411 = 5,142,042

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


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