Q: What are the prime factors of the number 10,742,144?

 A: 2, 7, 19, 631

Why are those the prime factors of the number 10,742,144?

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 10,742,144

10,742,144
Factor Arrows
25,371,072
Factor Arrows
22,685,536
Factor Arrows
21,342,768
Factor Arrows
2671,384
Factor Arrows
2335,692
Factor Arrows
2167,846
Factor Arrows
283,923
Factor Arrows
711,989
Factor Arrows
19631

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, 7, 19, 631

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 7 x 19 x 631 = 10,742,144

This can also be written as 27 x 71 x 191 x 6311 = 10,742,144

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


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