Q: What are the prime factors of the number 147,648?

 A: 2, 3, 769

Why are those the prime factors of the number 147,648?

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 147,648

147,648
Factor Arrows
273,824
Factor Arrows
236,912
Factor Arrows
218,456
Factor Arrows
29,228
Factor Arrows
24,614
Factor Arrows
22,307
Factor Arrows
3769

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, 769

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 3 x 769 = 147,648

This can also be written as 26 x 31 x 7691 = 147,648

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


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