Q: What are the prime factors of the number 144,431,520?

 A: 2, 3, 5, 41, 179

Why are those the prime factors of the number 144,431,520?

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 144,431,520

144,431,520
Factor Arrows
272,215,760
Factor Arrows
236,107,880
Factor Arrows
218,053,940
Factor Arrows
29,026,970
Factor Arrows
24,513,485
Factor Arrows
31,504,495
Factor Arrows
5300,899
Factor Arrows
417,339
Factor Arrows
41179

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, 5, 41, 179

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 5 x 41 x 41 x 179 = 144,431,520

This can also be written as 25 x 31 x 51 x 412 x 1791 = 144,431,520

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


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