Q: What are the prime factors of the number 42,142,624?

 A: 2, 23, 57259

Why are those the prime factors of the number 42,142,624?

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 42,142,624

42,142,624
Factor Arrows
221,071,312
Factor Arrows
210,535,656
Factor Arrows
25,267,828
Factor Arrows
22,633,914
Factor Arrows
21,316,957
Factor Arrows
2357,259

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, 23, 57259

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 23 x 57,259 = 42,142,624

This can also be written as 25 x 231 x 57,2591 = 42,142,624

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


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