Q: What are the prime factors of the number 144,800?

 A: 2, 5, 181

Why are those the prime factors of the number 144,800?

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 144,800

144,800
Factor Arrows
272,400
Factor Arrows
236,200
Factor Arrows
218,100
Factor Arrows
29,050
Factor Arrows
24,525
Factor Arrows
5905
Factor Arrows
5181

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, 5, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 181 = 144,800

This can also be written as 25 x 52 x 1811 = 144,800

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


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