Q: What are the prime factors of the number 42,056,112?

 A: 2, 3, 7, 17881

Why are those the prime factors of the number 42,056,112?

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 42,056,112

42,056,112
Factor Arrows
221,028,056
Factor Arrows
210,514,028
Factor Arrows
25,257,014
Factor Arrows
22,628,507
Factor Arrows
3876,169
Factor Arrows
7125,167
Factor Arrows
717,881

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, 17881

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 7 x 17,881 = 42,056,112

This can also be written as 24 x 31 x 72 x 17,8811 = 42,056,112

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


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