Q: What are the prime factors of the number 42,442,336?

 A: 2, 17, 61, 1279

Why are those the prime factors of the number 42,442,336?

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 42,442,336

42,442,336
Factor Arrows
221,221,168
Factor Arrows
210,610,584
Factor Arrows
25,305,292
Factor Arrows
22,652,646
Factor Arrows
21,326,323
Factor Arrows
1778,019
Factor Arrows
611,279

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, 17, 61, 1279

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 17 x 61 x 1,279 = 42,442,336

This can also be written as 25 x 171 x 611 x 1,2791 = 42,442,336

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


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