Q: What are the prime factors of the number 163,371,624?

 A: 2, 3, 13, 47, 857

Why are those the prime factors of the number 163,371,624?

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 163,371,624

163,371,624
Factor Arrows
281,685,812
Factor Arrows
240,842,906
Factor Arrows
220,421,453
Factor Arrows
36,807,151
Factor Arrows
13523,627
Factor Arrows
1340,279
Factor Arrows
47857

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, 13, 47, 857

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 13 x 13 x 47 x 857 = 163,371,624

This can also be written as 23 x 31 x 132 x 471 x 8571 = 163,371,624

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


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