Q: What are the prime factors of the number 40,478,176?

 A: 2, 103, 12281

Why are those the prime factors of the number 40,478,176?

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 40,478,176

40,478,176
Factor Arrows
220,239,088
Factor Arrows
210,119,544
Factor Arrows
25,059,772
Factor Arrows
22,529,886
Factor Arrows
21,264,943
Factor Arrows
10312,281

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, 103, 12281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 103 x 12,281 = 40,478,176

This can also be written as 25 x 1031 x 12,2811 = 40,478,176

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


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