Q: What are the prime factors of the number 155,712?

 A: 2, 3, 811

Why are those the prime factors of the number 155,712?

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 155,712

155,712
Factor Arrows
277,856
Factor Arrows
238,928
Factor Arrows
219,464
Factor Arrows
29,732
Factor Arrows
24,866
Factor Arrows
22,433
Factor Arrows
3811

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, 811

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 811 = 155,712

This can also be written as 26 x 31 x 8111 = 155,712

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 155,712:


Ask a Question