Q: What are the prime factors of the number 137,923,548?

 A: 2, 3, 7, 23, 71389

Why are those the prime factors of the number 137,923,548?

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 137,923,548

137,923,548
Factor Arrows
268,961,774
Factor Arrows
234,480,887
Factor Arrows
311,493,629
Factor Arrows
71,641,947
Factor Arrows
2371,389

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, 23, 71389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 23 x 71,389 = 137,923,548

This can also be written as 22 x 31 x 71 x 231 x 71,3891 = 137,923,548

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


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