Q: What are the prime factors of the number 144,541,440?

 A: 2, 3, 5, 12547

Why are those the prime factors of the number 144,541,440?

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 144,541,440

144,541,440
Factor Arrows
272,270,720
Factor Arrows
236,135,360
Factor Arrows
218,067,680
Factor Arrows
29,033,840
Factor Arrows
24,516,920
Factor Arrows
22,258,460
Factor Arrows
21,129,230
Factor Arrows
2564,615
Factor Arrows
3188,205
Factor Arrows
362,735
Factor Arrows
512,547

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, 12547

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 2 x 2 x 3 x 3 x 5 x 12,547 = 144,541,440

This can also be written as 28 x 32 x 51 x 12,5471 = 144,541,440

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


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