Q: What are the prime factors of the number 42,856,064?

 A: 2, 37, 9049

Why are those the prime factors of the number 42,856,064?

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 42,856,064

42,856,064
Factor Arrows
221,428,032
Factor Arrows
210,714,016
Factor Arrows
25,357,008
Factor Arrows
22,678,504
Factor Arrows
21,339,252
Factor Arrows
2669,626
Factor Arrows
2334,813
Factor Arrows
379,049

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, 37, 9049

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 2 x 37 x 9,049 = 42,856,064

This can also be written as 27 x 371 x 9,0491 = 42,856,064

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


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