Q: What are the prime factors of the number 42,256,008?

 A: 2, 3, 47, 12487

Why are those the prime factors of the number 42,256,008?

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 42,256,008

42,256,008
Factor Arrows
221,128,004
Factor Arrows
210,564,002
Factor Arrows
25,282,001
Factor Arrows
31,760,667
Factor Arrows
3586,889
Factor Arrows
4712,487

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, 47, 12487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 47 x 12,487 = 42,256,008

This can also be written as 23 x 32 x 471 x 12,4871 = 42,256,008

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


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