Q: What are the prime factors of the number 1,387,200?

 A: 2, 3, 5, 17

Why are those the prime factors of the number 1,387,200?

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 1,387,200

1,387,200
Factor Arrows
2693,600
Factor Arrows
2346,800
Factor Arrows
2173,400
Factor Arrows
286,700
Factor Arrows
243,350
Factor Arrows
221,675
Factor Arrows
37,225
Factor Arrows
51,445
Factor Arrows
5289
Factor Arrows
1717

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, 5, 17

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 3 x 5 x 5 x 17 x 17 = 1,387,200

This can also be written as 26 x 31 x 52 x 172 = 1,387,200

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


More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 1,387,200:


Ask a Question