Q: What are the prime factors of the number 4,427,840?

 A: 2, 5, 101, 137

Why are those the prime factors of the number 4,427,840?

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 4,427,840

4,427,840
Factor Arrows
22,213,920
Factor Arrows
21,106,960
Factor Arrows
2553,480
Factor Arrows
2276,740
Factor Arrows
2138,370
Factor Arrows
269,185
Factor Arrows
513,837
Factor Arrows
101137

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, 5, 101, 137

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 5 x 101 x 137 = 4,427,840

This can also be written as 26 x 51 x 1011 x 1371 = 4,427,840

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


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