Q: What are the prime factors of the number 3,628,544?

 A: 2, 19, 373

Why are those the prime factors of the number 3,628,544?

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 3,628,544

3,628,544
Factor Arrows
21,814,272
Factor Arrows
2907,136
Factor Arrows
2453,568
Factor Arrows
2226,784
Factor Arrows
2113,392
Factor Arrows
256,696
Factor Arrows
228,348
Factor Arrows
214,174
Factor Arrows
27,087
Factor Arrows
19373

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, 19, 373

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 19 x 373 = 3,628,544

This can also be written as 29 x 191 x 3731 = 3,628,544

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


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