Q: What are the prime factors of the number 1,907,840?

 A: 2, 5, 11, 271

Why are those the prime factors of the number 1,907,840?

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 1,907,840

1,907,840
Factor Arrows
2953,920
Factor Arrows
2476,960
Factor Arrows
2238,480
Factor Arrows
2119,240
Factor Arrows
259,620
Factor Arrows
229,810
Factor Arrows
214,905
Factor Arrows
52,981
Factor Arrows
11271

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, 11, 271

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 5 x 11 x 271 = 1,907,840

This can also be written as 27 x 51 x 111 x 2711 = 1,907,840

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 1,907,840:


Ask a Question