Q: What are the prime factors of the number 147,392?

 A: 2, 7, 47

Why are those the prime factors of the number 147,392?

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 147,392

147,392
Factor Arrows
273,696
Factor Arrows
236,848
Factor Arrows
218,424
Factor Arrows
29,212
Factor Arrows
24,606
Factor Arrows
22,303
Factor Arrows
7329
Factor Arrows
747

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, 47

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 7 x 7 x 47 = 147,392

This can also be written as 26 x 72 x 471 = 147,392

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


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