Q: What are the prime factors of the number 40,134,144?

 A: 2, 3, 17, 29, 53

Why are those the prime factors of the number 40,134,144?

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 40,134,144

40,134,144
Factor Arrows
220,067,072
Factor Arrows
210,033,536
Factor Arrows
25,016,768
Factor Arrows
22,508,384
Factor Arrows
21,254,192
Factor Arrows
2627,096
Factor Arrows
2313,548
Factor Arrows
2156,774
Factor Arrows
278,387
Factor Arrows
326,129
Factor Arrows
171,537
Factor Arrows
2953

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, 17, 29, 53

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 2 x 3 x 17 x 29 x 53 = 40,134,144

This can also be written as 29 x 31 x 171 x 291 x 531 = 40,134,144

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


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