Q: What are the prime factors of the number 1,396,224?

 A: 2, 3, 101

Why are those the prime factors of the number 1,396,224?

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 1,396,224

1,396,224
Factor Arrows
2698,112
Factor Arrows
2349,056
Factor Arrows
2174,528
Factor Arrows
287,264
Factor Arrows
243,632
Factor Arrows
221,816
Factor Arrows
210,908
Factor Arrows
25,454
Factor Arrows
22,727
Factor Arrows
3909
Factor Arrows
3303
Factor Arrows
3101

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, 101

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 3 x 3 x 101 = 1,396,224

This can also be written as 29 x 33 x 1011 = 1,396,224

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


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