Q: What are the prime factors of the number 17,851,392?

 A: 2, 3, 13, 149

Why are those the prime factors of the number 17,851,392?

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 17,851,392

17,851,392
Factor Arrows
28,925,696
Factor Arrows
24,462,848
Factor Arrows
22,231,424
Factor Arrows
21,115,712
Factor Arrows
2557,856
Factor Arrows
2278,928
Factor Arrows
2139,464
Factor Arrows
269,732
Factor Arrows
234,866
Factor Arrows
217,433
Factor Arrows
35,811
Factor Arrows
31,937
Factor Arrows
13149

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, 13, 149

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 2 x 3 x 3 x 13 x 149 = 17,851,392

This can also be written as 210 x 32 x 131 x 1491 = 17,851,392

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 17,851,392:


Ask a Question