Q: What are the prime factors of the number 2,553,408?

 A: 2, 3, 11, 13, 31

Why are those the prime factors of the number 2,553,408?

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 2,553,408

2,553,408
Factor Arrows
21,276,704
Factor Arrows
2638,352
Factor Arrows
2319,176
Factor Arrows
2159,588
Factor Arrows
279,794
Factor Arrows
239,897
Factor Arrows
313,299
Factor Arrows
34,433
Factor Arrows
11403
Factor Arrows
1331

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, 11, 13, 31

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 3 x 11 x 13 x 31 = 2,553,408

This can also be written as 26 x 32 x 111 x 131 x 311 = 2,553,408

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 2,553,408:


Ask a Question