Q: What are the prime factors of the number 42,573,888?

 A: 2, 3, 7, 10559

Why are those the prime factors of the number 42,573,888?

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 42,573,888

42,573,888
Factor Arrows
221,286,944
Factor Arrows
210,643,472
Factor Arrows
25,321,736
Factor Arrows
22,660,868
Factor Arrows
21,330,434
Factor Arrows
2665,217
Factor Arrows
3221,739
Factor Arrows
373,913
Factor Arrows
710,559

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, 7, 10559

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 10,559 = 42,573,888

This can also be written as 26 x 32 x 71 x 10,5591 = 42,573,888

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


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