Q: What are the prime factors of the number 146,976?

 A: 2, 3, 1531

Why are those the prime factors of the number 146,976?

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 146,976

146,976
Factor Arrows
273,488
Factor Arrows
236,744
Factor Arrows
218,372
Factor Arrows
29,186
Factor Arrows
24,593
Factor Arrows
31,531

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, 1531

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 1,531 = 146,976

This can also be written as 25 x 31 x 1,5311 = 146,976

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


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