Q: What are the prime factors of the number 1,407,776?

 A: 2, 29, 37, 41

Why are those the prime factors of the number 1,407,776?

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 1,407,776

1,407,776
Factor Arrows
2703,888
Factor Arrows
2351,944
Factor Arrows
2175,972
Factor Arrows
287,986
Factor Arrows
243,993
Factor Arrows
291,517
Factor Arrows
3741

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, 29, 37, 41

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 29 x 37 x 41 = 1,407,776

This can also be written as 25 x 291 x 371 x 411 = 1,407,776

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


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